"同類項" meaning in Japanese

{
  "forms": [
    {
      "form": "同類項",
      "ruby": [
        [
          "同",
          "どう"
        ],
        [
          "類",
          "るい"
        ],
        [
          "項",
          "こう"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "dōruikō",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "同類項",
      "tags": [
        "alternative",
        "kanji",
        "kyūjitai"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "どうるいこう"
      },
      "expansion": "同(どう)類(るい)項(こう) • (dōruikō)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms read with on'yomi",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 3 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "ja",
          "name": "Mathematics",
          "orig": "ja:Mathematics",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_roman_offsets": [
            [
              0,
              7
            ]
          ],
          "bold_text_offsets": [
            [
              0,
              3
            ]
          ],
          "bold_translation_offsets": [
            [
              11,
              21
            ]
          ],
          "english": "to collect like terms",
          "roman": "dōruikō o matomeru",
          "ruby": [
            [
              "同類項",
              "どうるいこう"
            ]
          ],
          "text": "同類項をまとめる",
          "translation": "to collect like terms",
          "type": "example"
        }
      ],
      "glosses": [
        "like terms"
      ],
      "id": "en-同類項-ja-noun-hcCUubyu",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "like terms",
          "like terms"
        ]
      ],
      "raw_glosses": [
        "(mathematics) like terms"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "同類項"
}

{
  "forms": [
    {
      "form": "同類項",
      "ruby": [
        [
          "同",
          "どう"
        ],
        [
          "類",
          "るい"
        ],
        [
          "項",
          "こう"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "dōruikō",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "同類項",
      "tags": [
        "alternative",
        "kanji",
        "kyūjitai"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "どうるいこう"
      },
      "expansion": "同(どう)類(るい)項(こう) • (dōruikō)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms read with on'yomi",
        "Japanese terms spelled with fourth grade kanji",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms spelled with secondary school kanji",
        "Japanese terms spelled with 同 read as どう",
        "Japanese terms spelled with 項 read as こう",
        "Japanese terms spelled with 類 read as るい",
        "Japanese terms with 3 kanji",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant sortkeys",
        "Japanese terms with usage examples",
        "Pages with 2 entries",
        "Pages with entries",
        "ja:Mathematics"
      ],
      "examples": [
        {
          "bold_roman_offsets": [
            [
              0,
              7
            ]
          ],
          "bold_text_offsets": [
            [
              0,
              3
            ]
          ],
          "bold_translation_offsets": [
            [
              11,
              21
            ]
          ],
          "english": "to collect like terms",
          "roman": "dōruikō o matomeru",
          "ruby": [
            [
              "同類項",
              "どうるいこう"
            ]
          ],
          "text": "同類項をまとめる",
          "translation": "to collect like terms",
          "type": "example"
        }
      ],
      "glosses": [
        "like terms"
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "like terms",
          "like terms"
        ]
      ],
      "raw_glosses": [
        "(mathematics) like terms"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "word": "同類項"
}