plug hat vs hat

plug hat and hat both are nouns.

Word	Noun	Adjective	Verb	Adverb
plug hat	Yes	No	No	No
hat	Yes	No	Yes	No

As nouns, hat is a hypernym of plug hat; that is, hat is a word with a broader meaning than plug hat:

plug hat: a felt hat that is round and hard with a narrow brim
hat: headdress that protects the head from bad weather; has shaped crown and usually a brim

Other hypernyms of plug hat include chapeau, lid.

plug hat (noun)	hat (noun)
a felt hat that is round and hard with a narrow brim	an informal term for a person's role
	headdress that protects the head from bad weather; has shaped crown and usually a brim

plug hat (verb)	hat (verb)
	put on or wear a hat
	furnish with a hat