Triticum spelta vs Triticum aestivum spelta

Triticum spelta and Triticum aestivum spelta both are nouns.

Word	Noun	Adjective	Verb	Adverb
Triticum spelta	Yes	No	No	No
Triticum aestivum spelta	Yes	No	No	No

As nouns, Triticum spelta and Triticum aestivum spelta are synonyms defined as:

Triticum spelta and Triticum aestivum spelta: hardy wheat grown mostly in Europe for livestock feed

Other synonyms of Triticum spelta include spelt.

Triticum spelta (noun)	Triticum aestivum spelta (noun)
hardy wheat grown mostly in Europe for livestock feed	hardy wheat grown mostly in Europe for livestock feed