alteration vs impairment

impairment vs alteration

alteration and impairment both are nouns.

Word	Noun	Adjective	Verb	Adverb
alteration	Yes	No	No	No
impairment	Yes	No	No	No

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

alteration: an event that occurs when something passes from one state or phase to another
impairment: the occurrence of a change for the worse

Other hyponyms of alteration include acceleration, deceleration, retardation, slowing, avulsion, break, mutation, sublimation, surprise, birth, nascence, nascency, nativity, breakup, detachment, separation, vagary, fluctuation, variation, conversion, death, decease, expiry, decrease, drop-off, lessening, destabilization, increase, easing, moderation, relief, deformation, transition, shift, transformation, transmutation, scintillation, sparkling, twinkle, play, shimmer, transmutation, damage, harm, development, revolution, chromosomal mutation, genetic mutation, mutation, sex change, loss of consciousness.

alteration (noun)	impairment (noun)
the act of revising or altering (involving reconsideration and modification)	damage that results in a reduction of strength or quality
the act of making something different (as e.g. the size of a garment)	the act of making something futile and useless (as by routine)
an event that occurs when something passes from one state or phase to another	the occurrence of a change for the worse
	the condition of being unable to perform as a consequence of physical or mental unfitness
	a symptom of reduced quality or strength

Difference between alteration and impairment

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