altered vs adapted

altered and adapted both are adjectives.

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

As adjectives, altered and adapted are synonyms defined as:

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

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