"Mare Procellarum" meaning in Latin

{
  "forms": [
    {
      "form": "Mare Procellārum",
      "tags": [
        "canonical",
        "neuter",
        "singular"
      ]
    },
    {
      "form": "Maris Procellārum",
      "tags": [
        "genitive"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "Mare<3> Procellārum"
      },
      "expansion": "Mare Procellārum n sg (genitive Maris Procellārum); third declension",
      "name": "la-proper noun"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Mare procellārum"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Latin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Latin neuter nouns in the third declension",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of Mare procellārum"
      ],
      "id": "en-Mare_Procellarum-la-name-uJao9hPB",
      "links": [
        [
          "Mare procellārum",
          "Mare procellarum#Latin"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "declension-3"
      ]
    }
  ],
  "word": "Mare Procellarum"
}

{
  "forms": [
    {
      "form": "Mare Procellārum",
      "tags": [
        "canonical",
        "neuter",
        "singular"
      ]
    },
    {
      "form": "Maris Procellārum",
      "tags": [
        "genitive"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "Mare<3> Procellārum"
      },
      "expansion": "Mare Procellārum n sg (genitive Maris Procellārum); third declension",
      "name": "la-proper noun"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Mare procellārum"
        }
      ],
      "categories": [
        "Latin entries with incorrect language header",
        "Latin lemmas",
        "Latin multiword terms",
        "Latin neuter nouns",
        "Latin neuter nouns in the third declension",
        "Latin nouns with red links in their inflection tables",
        "Latin proper nouns",
        "Latin third declension nouns"
      ],
      "glosses": [
        "Alternative form of Mare procellārum"
      ],
      "links": [
        [
          "Mare procellārum",
          "Mare procellarum#Latin"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "declension-3"
      ]
    }
  ],
  "word": "Mare Procellarum"
}