crosswise vs thwartwise

crosswise and thwartwise both are adjectives.

Word	Noun	Adjective	Verb	Adverb
crosswise	No	Yes	No	Yes
thwartwise	No	Yes	No	No

crosswise (adjective)	thwartwise (adjective)
lying or extending across the length of a thing or in a cross direction	extending or lying across; in a crosswise direction; at right angles to the long axis
in the shape of (a horizontal piece on) a cross

crosswise (adverb)	thwartwise (adverb)
transversely
not in the intended manner