Vanda caerulea vs vanda

Vanda caerulea and vanda both are nouns.

Word	Noun	Adjective	Verb	Adverb
Vanda caerulea	Yes	No	No	No
vanda	Yes	No	No	No

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

Vanda caerulea: 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

Vanda caerulea (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