vanda vs blue orchid

vanda and blue orchid both are nouns.

Word	Noun	Adjective	Verb	Adverb
vanda	Yes	No	No	No
blue orchid	Yes	No	No	No

As nouns, blue orchid is a hyponym of vanda; that is, blue orchid is a word with a more specific, narrower meaning than vanda:

vanda: any of numerous showy orchids of the genus Vanda having many large flowers in loose racemes
blue orchid: famous orchid of northern India having large pale to deep lilac-blue flowers

Other hyponyms of vanda include Vanda caerulea.

vanda (noun)	blue orchid (noun)
any of numerous showy orchids of the genus Vanda having many large flowers in loose racemes	famous orchid of northern India having large pale to deep lilac-blue flowers