lip service vs feigning

lip service and feigning both are nouns.

Word	Noun	Adjective	Verb	Adverb
lip service	Yes	No	No	No
feigning	Yes	No	No	No

As nouns, feigning is a hypernym of lip service; that is, feigning is a word with a broader meaning than lip service:

lip service: an expression of agreement that is not supported by real conviction
feigning: pretending with intention to deceive

Other hypernyms of lip service include dissembling, pretence, pretense.

lip service (noun)	feigning (noun)
an expression of agreement that is not supported by real conviction	the act of giving a false appearance
	pretending with intention to deceive