build up vs prepare

build up and prepare both are verbs.

Word	Noun	Adjective	Verb	Adverb
build up	No	No	Yes	No
prepare	No	No	Yes	No

build up (verb)	prepare (verb)
form or accumulate steadily	make ready or suitable or equip in advance for a particular purpose or for some use, event, etc
enlarge, develop, or increase by degrees or in stages	undergo training or instruction in preparation for a particular role, function, or profession
change the use of and make available or usable	create by training and teaching
bolster or strengthen	arrange by systematic planning and united effort
prepare oneself for a military confrontation	prepare for eating by applying heat
	to prepare verbally, either for written or spoken delivery
	lead up to and soften by sounding the dissonant note in it as a consonant note in the preceding chord
	educate for a future role or function