Duds and Underclothes

Duds noun - Informal terms for clothing.

Underclothes and duds are semantically related In some cases you can use "Underclothes" instead a noun "Duds".

Underclothes noun - Clothing intended to be worn underneath other clothing.

Duds and underclothes are semantically related in attire topic. Sometimes you can use "Duds" instead a noun "Underclothes", if it concerns topics such as personal attire.