beginning vs incipience

beginning and incipience both are nouns.

Word	Noun	Adjective	Verb	Adverb
beginning	Yes	Yes	No	No
incipience	Yes	No	No	No

As nouns, incipience is a hyponym of beginning; that is, incipience is a word with a more specific, narrower meaning than beginning:

Other hyponyms of beginning include birth, incipiency, starting point, terminus a quo, threshold.

beginning (noun)	incipience (noun)
the act of starting something	beginning to exist or to be apparent
the first part or section of something
the event consisting of the start of something
the place where something begins, where it springs into being
the time at which something is supposed to begin

beginning (adjective)	incipience (adjective)
serving to begin