phosphorescence vs fluorescence

phosphorescence and fluorescence both are nouns.

Word	Noun	Adjective	Verb	Adverb
phosphorescence	Yes	No	No	No
fluorescence	Yes	No	No	No

As nouns, fluorescence is a hypernym of phosphorescence; that is, fluorescence is a word with a broader meaning than phosphorescence:

phosphorescence: a fluorescence that persists after the bombarding radiation has ceased
fluorescence: light emitted during absorption of radiation of some other (invisible) wavelength

phosphorescence (noun)	fluorescence (noun)
a fluorescence that persists after the bombarding radiation has ceased	light emitted during absorption of radiation of some other (invisible) wavelength