diminution vs augmentation

diminution and augmentation both are nouns.

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

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