Niggle and Throe

Niggle verb - To make often peevish criticisms or objections about matters that are minor, unimportant, or irrelevant.

Throe and niggle are semantically related. In some cases you can use "Throe" instead a noun "Niggle".

Throe noun - A sharp unpleasant sensation usually felt in some specific part of the body.

Niggle and throe are semantically related. Sometimes you can use "Niggle" instead a noun "Throe".