Briefs and G-string

Briefs noun - Short tight-fitting underpants (trade name Jockey shorts).

G-string and briefs are semantically related In some cases you can use "G-string" instead a noun "Briefs".

G-string noun - Minimal clothing worn by stripteasers; a narrow strip of fabric that covers the pubic area, passes between the thighs, and is supported by a waistband.

Briefs and G-string are semantically related in clothing worn under outerwear topic. Sometimes you can use "Briefs" instead a noun phrase "G-string".