silage vs ensilage

silage and ensilage both are nouns.

Word	Noun	Adjective	Verb	Adverb
silage	Yes	No	No	No
ensilage	Yes	No	No	No

As nouns, silage and ensilage are synonyms defined as:

silage and ensilage: fodder harvested while green and kept succulent by partial fermentation as in a silo

silage (noun)	ensilage (noun)
fodder harvested while green and kept succulent by partial fermentation as in a silo	fodder harvested while green and kept succulent by partial fermentation as in a silo