Lilium martagon vs Turk's-cap

Lilium martagon and Turk's-cap both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lilium martagon	Yes	No	No	No
Turk's-cap	Yes	No	No	No

As nouns, Lilium martagon and Turk's-cap are synonyms defined as:

Lilium martagon and Turk's-cap: lily with small dull purple flowers of northwestern Europe and northwestern Asia

Other synonyms of Lilium martagon include martagon.

Lilium martagon (noun)	Turk's-cap (noun)
lily with small dull purple flowers of northwestern Europe and northwestern Asia	lily of the eastern United States with orange to red maroon-spotted flowers
	lily with small dull purple flowers of northwestern Europe and northwestern Asia