architecture vs crenel

architecture and crenel both are nouns.

Word	Noun	Adjective	Verb	Adverb
architecture	Yes	No	No	No
crenel	Yes	No	Yes	No

architecture (noun)	crenel (noun)
the profession of designing buildings and environments with consideration for their esthetic effect	a notch or open space between two merlons in a crenelated battlement
an architectural product or work	one of a series of rounded projections (or the notches between them) formed by curves along an edge (as the edge of a leaf or piece of cloth or the margin of a shell or a shriveled red blood cell observed in a hypertonic solution etc.)
(computer science) the structure and organization of a computer's hardware or system software
the discipline dealing with the principles of design and construction and ornamentation of fine buildings

architecture (verb)	crenel (verb)
	supply with battlements