wild hyacinth vs indigo squill

wild hyacinth and indigo squill both are nouns.

Word	Noun	Adjective	Verb	Adverb
wild hyacinth	Yes	No	No	No
indigo squill	Yes	No	No	No

As nouns, wild hyacinth and indigo squill are synonyms defined as:

wild hyacinth and indigo squill: eastern camas; eastern and central North America

Other synonyms of wild hyacinth include Camassia scilloides.

wild hyacinth (noun)	indigo squill (noun)
sometimes placed in genus Scilla	eastern camas; eastern and central North America
eastern camas; eastern and central North America