adapted vs altered

adapted and altered both are adjectives.

Word	Noun	Adjective	Verb	Adverb
adapted	No	Yes	No	No
altered	No	Yes	No	No

As adjectives, adapted and altered are synonyms defined as:

adapted and altered: changed in order to improve or made more fit for a particular purpose

adapted (adjective)	altered (adjective)
changed in order to improve or made more fit for a particular purpose	changed in form or character without becoming something else
	having testicles or ovaries removed
	changed in order to improve or made more fit for a particular purpose