Not too many; the single vowel limits the possibilities. The words are:
2
A cocoon is a head like yours .... a sentence is i have a cocoon head
The plural form for the noun cocoon is cocoons.
Yes, the word 'cocoon' is a noun, a singular, common, concrete noun; a word for a silky case spun by the larvae of many insects for protection as pupae; something that envelops someone in a protective or comforting way; a word for a thing.
The word is spelled as you have done in the question.
Pupa or chrysalis.
caterpillers make cocoons
there are two
cocoon cuckoo celtics
moth
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cocoon