face time vs work time

face time and work time both are nouns.

Word	Noun	Adjective	Verb	Adverb
face time	Yes	No	No	No
work time	Yes	No	No	No

As nouns, work time is a hypernym of face time; that is, work time is a word with a broader meaning than face time:

face time: work time spent at the location of or in the presence of other people
work time: a time period when you are required to work

face time (noun)	work time (noun)
work time spent at the location of or in the presence of other people	a time period when you are required to work