array vs spectrum

array and spectrum both are nouns.

Word	Noun	Adjective	Verb	Adverb
array	Yes	No	Yes	No
spectrum	Yes	No	No	No

As nouns, spectrum is a hyponym of array; that is, spectrum is a word with a more specific, narrower meaning than array:

Other hyponyms of array include table, tabular array, matrix, row, column, panoply, bank.

array (noun)	spectrum (noun)
an arrangement of aerials spaced to give desired directional characteristics	a broad range of related objects or values or qualities or ideas or activities
especially fine or decorative clothing	an ordered array of the components of an emission or wave
an impressive display
an orderly arrangement

array (verb)	spectrum (verb)
align oneself with a group or a way of thinking
lay out orderly or logically in a line or as if in a line