pen vs indite

pen is a noun but indite is not a noun.

Word	Noun	Adjective	Verb	Adverb
pen	Yes	No	Yes	No
indite	No	No	Yes	No

As verbs, pen and indite are synonyms defined as:

Other synonyms of pen include compose, write.

pen (noun)	indite (noun)
female swan
a writing implement with a point from which ink flows
an enclosure for confining livestock
a correctional institution for those convicted of major crimes
a portable enclosure in which babies may be left to play

pen (verb)	indite (verb)
produce a literary work	produce a literary work