wavering vs unregularity

wavering and unregularity both are nouns.

Word	Noun	Adjective	Verb	Adverb
wavering	Yes	Yes	No	No
unregularity	Yes	No	No	No

As nouns, unregularity is a hypernym of wavering; that is, unregularity is a word with a broader meaning than wavering:

wavering: the quality of being unsteady and subject to changes
unregularity: not characterized by a fixed principle or rate; at irregular intervals

Other hypernyms of wavering include irregularity.

wavering (noun)	unregularity (noun)
the quality of being unsteady and subject to changes	not characterized by a fixed principle or rate; at irregular intervals
indecision in speech or action

wavering (adjective)	unregularity (adjective)
uncertain in purpose or action