"мощ" meaning in Northern Mansi

{
  "forms": [
    {
      "form": "moŝ",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mns-nor",
        "2": "adjective",
        "sc": "Cyrl"
      },
      "expansion": "мощ (moŝ)",
      "name": "head"
    }
  ],
  "lang": "Northern Mansi",
  "lang_code": "mns-nor",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "mosʹ",
          "word": "мось"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Northern Mansi entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Northern Mansi terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Upper Lozva Mansi",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of мось (mosʹ)"
      ],
      "id": "en-мощ-mns-nor-adj-~fxLgfRw",
      "links": [
        [
          "мось",
          "мось#Northern Mansi"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "мощ"
}

{
  "forms": [
    {
      "form": "moŝ",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mns-nor",
        "2": "adjective",
        "sc": "Cyrl"
      },
      "expansion": "мощ (moŝ)",
      "name": "head"
    }
  ],
  "lang": "Northern Mansi",
  "lang_code": "mns-nor",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "mosʹ",
          "word": "мось"
        }
      ],
      "categories": [
        "Northern Mansi adjectives",
        "Northern Mansi entries with incorrect language header",
        "Northern Mansi lemmas",
        "Northern Mansi terms with redundant script codes",
        "Upper Lozva Mansi"
      ],
      "glosses": [
        "Alternative form of мось (mosʹ)"
      ],
      "links": [
        [
          "мось",
          "мось#Northern Mansi"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "мощ"
}

{
  "called_from": "form_descriptions/1698",
  "msg": "unrecognized head form: Upper Lozva",
  "path": [
    "мощ"
  ],
  "section": "Northern Mansi",
  "subsection": "adjective",
  "title": "мощ",
  "trace": ""
}