coat hanger vs hanger

coat hanger and hanger both are nouns.

Word	Noun	Adjective	Verb	Adverb
coat hanger	Yes	No	No	No
hanger	Yes	No	No	No

As nouns, hanger is a hypernym of coat hanger; that is, hanger is a word with a broader meaning than coat hanger:

coat hanger: a hanger that is shaped like a person's shoulders and used to hang garments on
hanger: anything from which something can be hung

coat hanger (noun)	hanger (noun)
a hanger that is shaped like a person's shoulders and used to hang garments on	anything from which something can be hung
	a worker who hangs something