differential threshold vs difference limen

differential threshold and difference limen both are nouns.

Word	Noun	Adjective	Verb	Adverb
differential threshold	Yes	No	No	No
difference limen	Yes	No	No	No

As nouns, differential threshold and difference limen are synonyms defined as:

differential threshold and difference limen: the smallest change in stimulation that a person can detect

Other synonyms of differential threshold include difference threshold, differential limen.

differential threshold (noun)	difference limen (noun)
the smallest change in stimulation that a person can detect	the smallest change in stimulation that a person can detect