[{
  _id: 1,
  usages: 2,
  word: "Name"
}, {
  _id: 2,
  usages: 1,
  word: "Street"
}, {
  _id: 3,
  usages: 1,
  word: "House"
}, {
  _id: 4,
  usages: 3,
  word: "Table"
}, {
  _id: 5,
  usages: 3,
  word: "Bread"
}, {
  _id: 6,
  usages: 4,
  word: "Door"
}]

Words.aggregate([
  {
    $match: { _
      usages: { WHAT_SHOULD_I_HAVE_HERE }
    }
  }, {
    $sample: {
      size: 50
    }
  }
])

db.collection.aggregate([
  { "$facet": {
    "minUsages": [{ "$sort": { "usages": -1 } }],
    "maxUsages": [{ "$sort": { "usages": 1 } }]
  }},
  { "$addFields": {
    "lowestUsages": {
      "$arrayElemAt": ["$minUsages", 0]
    },
    "highestUsages": {
      "$arrayElemAt": ["$maxUsages", 0]
    }
  }},
  { "$project": {
    "minUsages": {
      "$filter": {
        "input": "$minUsages",
        "as": "minUsage",
        "cond": {
          "$eq": ["$$minUsage.usages", "$lowestUsages.usages"]
        }
      }
    },
    "maxUsages": {
      "$filter": {
        "input": "$maxUsages",
        "as": "maxUsage",
        "cond": {
          "$eq": ["$$maxUsage.usages", "$highestUsages.usages"]
        }
      }
    }
  }}
])

const minUsage = await db.collection.find({}).sort({ "usages": -1 }).limit(1)
const maxUsage = await db.collection.find({}).sort({ "usages": 1 }).limit(1)

const minUsages = await db.collection.find({ "usages": { "$in": [minUsages[0].usages] } })
const maxUsages = await db.collection.find({ "usages": { "$in": [maxUsages[0].usages] } })