upper side vs pate

upper side and pate both are nouns.

Word	Noun	Adjective	Verb	Adverb
upper side	Yes	No	No	No
pate	Yes	No	No	No

As nouns, pate is a hyponym of upper side; that is, pate is a word with a more specific, narrower meaning than upper side:

Other hyponyms of upper side include crest, crown, poll, crown, poll, desktop, rooftop, tiptop.

upper side (noun)	pate (noun)
the highest or uppermost side of anything	liver or meat or fowl finely minced or ground and variously seasoned
	the top of the head