threshold vs esthesis

threshold and esthesis both are nouns.

Word	Noun	Adjective	Verb	Adverb
threshold	Yes	No	No	No
esthesis	Yes	No	No	No

As nouns, esthesis is a hypernym of threshold; that is, esthesis is a word with a broader meaning than threshold:

Other hypernyms of threshold include aesthesis, sensation, sense datum, sense experience, sense impression.

threshold (noun)	esthesis (noun)
the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offers support when passing through a doorway	an unelaborated elementary awareness of stimulation
the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close
the smallest detectable sensation
a region marking a boundary
the starting point for a new state or experience