"一利一害" meaning in 日本語

{
  "categories": [
    {
      "kind": "other",
      "name": "四字熟語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "日本語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "日本語_名詞",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "いちりいちがい"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "名詞",
  "senses": [
    {
      "glosses": [
        "物事には全てなんらかの利益がある反面、他方で害があること。"
      ],
      "id": "ja-一利一害-ja-noun-y28vhQ1o"
    }
  ],
  "synonyms": [
    {
      "word": "一長一短"
    },
    {
      "word": "一得一失"
    }
  ],
  "word": "一利一害"
}

{
  "categories": [
    "四字熟語",
    "日本語",
    "日本語_名詞"
  ],
  "forms": [
    {
      "form": "いちりいちがい"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "名詞",
  "senses": [
    {
      "glosses": [
        "物事には全てなんらかの利益がある反面、他方で害があること。"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "一長一短"
    },
    {
      "word": "一得一失"
    }
  ],
  "word": "一利一害"
}