flower vs time period

flower and time period both are nouns.

Word	Noun	Adjective	Verb	Adverb
flower	Yes	No	Yes	No
time period	Yes	No	No	No

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

Other hypernyms of flower include period, period of time.

flower (noun)	time period (noun)
a plant cultivated for its blooms or blossoms	an amount of time
reproductive organ of angiosperm plants especially one having showy or colorful parts
the period of greatest prosperity or productivity

flower (verb)	time period (verb)
produce or yield flowers