petaflop vs unit of measurement

petaflop and unit of measurement both are nouns.

Word	Noun	Adjective	Verb	Adverb
petaflop	Yes	No	No	No
unit of measurement	Yes	No	No	No

As nouns, unit of measurement is a hypernym of petaflop; that is, unit of measurement is a word with a broader meaning than petaflop:

petaflop: (computer science) a unit for measuring the speed of a computer system, equal to one quadrillion floating-point operations a second.
unit of measurement: any division of quantity accepted as a standard of measurement or exchange

Other hypernyms of petaflop include unit.

petaflop (noun)	unit of measurement (noun)
(computer science) a unit for measuring the speed of a computer system, equal to one quadrillion floating-point operations a second.	any division of quantity accepted as a standard of measurement or exchange