time frame vs period of time

time frame and period of time both are nouns.

Word	Noun	Adjective	Verb	Adverb
time frame	Yes	No	No	No
period of time	Yes	No	No	No

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

time frame: a time period during which something occurs or is expected to occur
period of time: an amount of time

Other hypernyms of time frame include period, time period.

time frame (noun)	period of time (noun)
a time period during which something occurs or is expected to occur	an amount of time