human foot vs human

human foot and human both are nouns.

Word	Noun	Adjective	Verb	Adverb
human foot	Yes	No	No	No
human	Yes	Yes	No	No

human foot (noun)	human (noun)
the part of the leg of a human being below the ankle joint	any living or extinct member of the family Hominidae characterized by superior intelligence, articulate speech, and erect carriage

human foot (adjective)	human (adjective)
	having human form or attributes as opposed to those of animals or divine beings
	characteristic of humanity
	relating to a person