seat vs furnish

seat is a noun but furnish is not a noun.

Word	Noun	Adjective	Verb	Adverb
seat	Yes	No	Yes	No
furnish	No	No	Yes	No

As verbs, furnish is a hypernym of seat; that is, furnish is a word with a broader meaning than seat:

Other hypernyms of seat include offer, provide, render, supply.

As verbs, furnish is a hypernym of seat; that is, furnish is a word with a broader meaning than seat:

Other hypernyms of seat include offer, provide, render, supply.

seat (noun)	furnish (noun)
any support where you can sit (especially the part of a chair or bench etc. on which you sit)
furniture that is designed for sitting on
the cloth covering for the buttocks
a part of a machine that supports or guides another part
the legal right to sit as a member in a legislative or similar body
the fleshy part of the human body that you sit on
a center of authority (as a city from which authority is exercised)
a space reserved for sitting (as in a theater or on a train or airplane)
the location (metaphorically speaking) where something is based

seat (verb)	furnish (verb)
show to a seat; assign a seat for	give something useful or necessary to
place or attach firmly in or on a base	provide or equip with furniture
place in or on a seat
provide with seats
put a seat on a chair
place ceremoniously or formally in an office or position
be able to seat