langley vs unit of measurement

langley and unit of measurement both are nouns.

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

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

langley: unit of solar radiation
unit of measurement: any division of quantity accepted as a standard of measurement or exchange

Other hypernyms of langley include unit.

langley (noun)	unit of measurement (noun)
unit of solar radiation	any division of quantity accepted as a standard of measurement or exchange