mid-November vs period of time

mid-November and period of time both are nouns.

Word	Noun	Adjective	Verb	Adverb
mid-November	Yes	No	No	No
period of time	Yes	No	No	No

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

Other hypernyms of mid-November include period, time period.

mid-November (noun)	period of time (noun)
the middle part of November	an amount of time