pretense vs lip service

pretense and lip service both are nouns.

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

As nouns, lip service is a hyponym of pretense; that is, lip service is a word with a more specific, narrower meaning than pretense:

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

Other hyponyms of pretense include bluff, pretext, stalking-horse, hypocrisy.

pretense (noun)	lip service (noun)
the act of giving a false appearance	an expression of agreement that is not supported by real conviction
a false or unsupportable quality
an artful or simulated semblance
imaginative intellectual play
pretending with intention to deceive