jnd vs difference limen

jnd and difference limen both are nouns.

Word	Noun	Adjective	Verb	Adverb
jnd	Yes	No	No	No
difference limen	Yes	No	No	No

As nouns, difference limen is a hypernym of jnd; that is, difference limen is a word with a broader meaning than jnd:

jnd: (psychophysics) the difference between two stimuli that (under properly controlled experimental conditions) is detected as often as it is undetected
difference limen: the smallest change in stimulation that a person can detect

Other hypernyms of jnd include difference threshold, differential limen, differential threshold.

jnd (noun)	difference limen (noun)
(psychophysics) the difference between two stimuli that (under properly controlled experimental conditions) is detected as often as it is undetected	the smallest change in stimulation that a person can detect