What is the abstract noun for evaporate?

The noun forms of the verb to evaporate are evaporator, evaporation and the gerund, evaporating.

The nouns 'evaporation' and 'evaporating' are abstract nouns as Words for the process of something abstract ceasing to exist; a Word for a concept.

The nouns 'evaporation' and 'evaporating' are concrete nouns as a Word for the process of turning from liquid into vapor; a Word for a physical process.

The noun 'evaporator' is a concrete noun as a Word for a device used to vaporize liquid; a Word for a physical thing.