crownwork vs solid bastion

crownwork and solid bastion both are nouns.

Word	Noun	Adjective	Verb	Adverb
crownwork	Yes	No	No	No
solid bastion	Yes	No	No	No

crownwork (noun)	solid bastion (noun)
(dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth	a bastion that is filled up entirely, and has the ground even with the height of the rampart, without any empty space towards the center.
a type of fortification, like a hornwork, but consisting of a full bastion with the walls on either side ending in half-bastions from which longer flank walls run back towards the main fortress.