fairy-slipper vs calypso

fairy-slipper and calypso both are nouns.

Word	Noun	Adjective	Verb	Adverb
fairy-slipper	Yes	No	No	No
calypso	Yes	No	No	No

As nouns, fairy-slipper and calypso are synonyms defined as:

fairy-slipper and calypso: rare north temperate bog orchid bearing a solitary white to pink flower marked with purple at the tip of an erect reddish stalk above 1 basal leaf

Other synonyms of fairy-slipper include Calypso bulbosa.

fairy-slipper (noun)	calypso (noun)
rare north temperate bog orchid bearing a solitary white to pink flower marked with purple at the tip of an erect reddish stalk above 1 basal leaf	rare north temperate bog orchid bearing a solitary white to pink flower marked with purple at the tip of an erect reddish stalk above 1 basal leaf