avoid vs invalidate

avoid and invalidate both are verbs.

Word	Noun	Adjective	Verb	Adverb
avoid	No	No	Yes	No
invalidate	No	No	Yes	No

As verbs, avoid and invalidate are synonyms defined as:

Other synonyms of avoid include annul, nullify, quash, void.

avoid (verb)	invalidate (verb)
stay clear from; keep away from; keep out of the way of someone or something	take away the legal force of or render ineffective
refrain from certain foods or beverages	show to be invalid
declare invalid	make invalid for use
prevent the occurrence of; prevent from happening; to protect from or to keep away anything undesirable; to ward off	declare invalid
refrain from doing something