blue orchid vs vanda

blue orchid and vanda both are nouns.

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

As nouns, vanda is a hypernym of blue orchid; that is, vanda is a word with a broader meaning than blue orchid:

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

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