intrenchment vs entrenchment

intrenchment and entrenchment both are nouns.

Word	Noun	Adjective	Verb	Adverb
intrenchment	Yes	No	No	No
entrenchment	Yes	No	No	No

As nouns, intrenchment and entrenchment are synonyms defined as:

intrenchment and entrenchment: an entrenched fortification; a position protected by trenches

intrenchment (noun)	entrenchment (noun)
an entrenched fortification; a position protected by trenches	an entrenched fortification; a position protected by trenches