adjustment vs laxation

adjustment and laxation both are nouns.

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

As nouns, laxation is a hyponym of adjustment; that is, laxation is a word with a more specific, narrower meaning than adjustment:

adjustment: the act of making something different (as e.g. the size of a garment)
laxation: the act of making something less tight

Other hyponyms of adjustment include loosening, tightening, accommodation, adaptation, tune.

adjustment (noun)	laxation (noun)
the act of making something different (as e.g. the size of a garment)	the act of making something less tight
the act of adjusting something to match a standard	the elimination of fecal waste through the anus
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)