supply vs fix up

supply is a noun but fix up is not a noun.

Word	Noun	Adjective	Verb	Adverb
supply	Yes	No	Yes	No
fix up	No	No	Yes	No

As verbs, fix up is a hyponym of supply; that is, fix up is a word with a more specific, narrower meaning than supply:

supply: give what is desired or needed, especially support, food or sustenance
fix up: find (something or someone) for

supply (noun)	fix up (noun)
the activity of supplying or providing something
offering goods and services for sale
an amount of something available for use

supply (verb)	fix up (verb)
state or say further	make arrangements for
give what is desired or needed, especially support, food or sustenance	find (something or someone) for
give something useful or necessary to
circulate or distribute or equip with