Collective nouns list
    subject collective noun and usage
    oarsmenA row of oarsmen
    objectsA collection of objects
    oboistsA plaint of oboists
    octopusesA consortium of octopuses
    list of collective nouns
    subject collective noun and usage
    office boysAn ogle of office boys
    officersA mess of officers
    oncologistsA lump of oncologists
    onionsA rope of onions
    onlookersA crowd of onlookers
    operasA grandiosity of operas
    ophthalmologistsA retinue of ophthalmologists
    optometristsA vision of optometrists
    orangesA pocket of oranges
    orangutansA buffoonery of orangutans
    Collective Nouns List - Page 44 of 72
    Collective Nouns List