potential drop vs potential difference

potential drop and potential difference both are nouns.

Word	Noun	Adjective	Verb	Adverb
potential drop	Yes	No	No	No
potential difference	Yes	No	No	No

As nouns, potential drop and potential difference are synonyms defined as:

potential drop and potential difference: the difference in electrical charge between two points in a circuit expressed in volts

Other synonyms of potential drop include electric potential, potential, voltage.

potential drop (noun)	potential difference (noun)
the difference in electrical charge between two points in a circuit expressed in volts	the difference in electrical charge between two points in a circuit expressed in volts