agree vs fix up

agree and fix up both are verbs.

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

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

agree (verb)	fix up (verb)
be in accord; be in agreement	make arrangements for
consent or assent to a condition, or agree to do something	find (something or someone) for
achieve harmony of opinion, feeling, or purpose
be agreeable or suitable
be compatible, similar or consistent; coincide in their characteristics
go together
show grammatical agreement