Huntingdon willow vs Salix alba

Huntingdon willow and Salix alba both are nouns.

Word	Noun	Adjective	Verb	Adverb
Huntingdon willow	Yes	No	No	No
Salix alba	Yes	No	No	No

As nouns, Huntingdon willow and Salix alba are synonyms defined as:

Huntingdon willow and Salix alba: large willow tree of Eurasia and North Africa having greyish canescent leaves and grey bark

Other synonyms of Huntingdon willow include white willow.

Huntingdon willow (noun)	Salix alba (noun)
large willow tree of Eurasia and North Africa having greyish canescent leaves and grey bark	large willow tree of Eurasia and North Africa having greyish canescent leaves and grey bark