augmentation vs diminution

augmentation and diminution both are nouns.

Word	Noun	Adjective	Verb	Adverb
augmentation	Yes	No	No	No
diminution	Yes	No	No	No

augmentation (noun)	diminution (noun)
the act of augmenting	the act of decreasing or reducing something
the statement of a theme in notes of greater duration (usually twice the length of the original)	the statement of a theme in notes of lesser duration (usually half the length of the original)
the amount by which something becomes greater	change toward something smaller or lower