fill up vs make full

fill up and make full both are verbs.

Word	Noun	Adjective	Verb	Adverb
fill up	No	No	Yes	No
make full	No	No	Yes	No

As verbs, fill up and make full are synonyms defined as:

Other synonyms of fill up include fill.

fill up (verb)	make full (verb)
make full, also in a metaphorical sense	make full, also in a metaphorical sense
become full
eat until one is sated
fill or stop up