inflection vs departure

inflection and departure both are nouns.

Word	Noun	Adjective	Verb	Adverb
inflection	Yes	No	No	No
departure	Yes	No	No	No

As nouns, departure is a hypernym of inflection; that is, departure is a word with a broader meaning than inflection:

Other hypernyms of inflection include deviation, difference, divergence.

inflection (noun)	departure (noun)
the patterns of stress and intonation in a language	the act of departing
a manner of speaking in which the loudness or pitch or tone of the voice is modified	euphemistic expressions for death
deviation from a straight or normal course	a variation that deviates from the standard or norm
a change in the form of a word (usually by adding a suffix) to indicate a change in its grammatical function