Brunt and Nail-biting

Brunt noun - The main or greater part of something as distinguished from its subordinate parts.

Nail-biting and brunt are semantically related In some cases you can use "Nail-biting" instead a noun "Brunt".

Nail-biting adjective - Marked by or causing agitation or uncomfortable feelings.

Brunt and nail-biting are semantically related in mental stress topic. Sometimes you can use "Brunt" instead a noun phrase "Nail-biting".