Riptide and Undertone

Riptide noun - A stretch of turbulent water in a river or the sea caused by one current flowing into or across another current.

Undertone and riptide are semantically related. in drift topic. In some cases you can use "Undertone" instead a noun "Riptide".

Undertone noun - A subdued emotional quality underlying an utterance; implicit meaning.

Riptide and undertone are semantically related. Sometimes you can use "Riptide" instead a noun "Undertone".