Question

Which piece of text uses this meaning of defect?
defect verb to leave your country, party, or organization
A. Supporters of the ousted president plan to defect from the ruling government and form a new opposition group.
B. The Department of Transportation's National Highway Traffic Safety Administration enforces safety standards for motor vehicles and requires manufacturers to recall any vehicle models that exhibit a safety defect.

Answer 1

A. It uses "defect" as the verb meaning to leave an organization or country. B uses "defect" as a noun meaning a flaw.