exothermic vs exothermal

exothermic and exothermal both are adjectives.

Word	Noun	Adjective	Verb	Adverb
exothermic	No	Yes	No	No
exothermal	No	Yes	No	No

As adjectives, exothermic and exothermal are synonyms defined as:

exothermic and exothermal: (of a chemical reaction or compound) occurring or formed with the liberation of heat

Other synonyms of exothermic include heat-releasing.

exothermic (adjective)	exothermal (adjective)
(of a chemical reaction or compound) occurring or formed with the liberation of heat	(of a chemical reaction or compound) occurring or formed with the liberation of heat