adjustment vs adaption

adjustment and adaption both are nouns.

Word	Noun	Adjective	Verb	Adverb
adjustment	Yes	No	No	No
adaption	Yes	No	No	No

As nouns, adjustment and adaption are synonyms defined as:

adjustment and adaption: the process of adapting to something (such as environmental conditions)

Other synonyms of adjustment include adaptation.

adjustment (noun)	adaption (noun)
the act of making something different (as e.g. the size of a garment)	the process of adapting to something (such as environmental conditions)
the act of adjusting something to match a standard
making or becoming suitable; adjusting to circumstances
an amount added or deducted on the basis of qualifying circumstances
the process of adapting to something (such as environmental conditions)