Nitpick and Slug

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

Slug and nitpick are semantically related. In some cases you can use "Slug" instead a verb "Nitpick".

Slug verb - To deliver a blow to (someone or something) usually in a strong vigorous manner.

Nitpick and slug are semantically related. Sometimes you can use "Nitpick" instead a verb "Slug".