serotonin vs 5-hydroxytryptamine

serotonin and 5-hydroxytryptamine both are nouns.

Word	Noun	Adjective	Verb	Adverb
serotonin	Yes	No	No	No
5-hydroxytryptamine	Yes	No	No	No

As nouns, serotonin and 5-hydroxytryptamine are synonyms defined as:

serotonin and 5-hydroxytryptamine: a neurotransmitter involved in e.g. sleep and depression and memory

serotonin (noun)	5-hydroxytryptamine (noun)
a neurotransmitter involved in e.g. sleep and depression and memory	a neurotransmitter involved in e.g. sleep and depression and memory