acathexis vs libidinal energy

acathexis and libidinal energy both are nouns.

Word	Noun	Adjective	Verb	Adverb
acathexis	Yes	No	No	No
libidinal energy	Yes	No	No	No

As nouns, libidinal energy is a hypernym of acathexis; that is, libidinal energy is a word with a broader meaning than acathexis:

acathexis: (psychoanalysis) a lack of cathexis; a condition in which significant objects or memories arouse no emotion in an individual
libidinal energy: (psychoanalysis) psychic energy produced by the libido

acathexis (noun)	libidinal energy (noun)
(psychoanalysis) a lack of cathexis; a condition in which significant objects or memories arouse no emotion in an individual	(psychoanalysis) psychic energy produced by the libido