Dysphemism and Four-letter word

Dysphemism noun - An offensive or disparaging expression that is substituted for an inoffensive one.

Four-letter word and dysphemism are semantically related. In some cases you can use "Four-letter word" instead a noun "Dysphemism".

Four-letter word noun - A disrespectful or indecent word or expression.

Dysphemism and four-letter word are semantically related. Sometimes you can replace term "Dysphemism" with "Four-letter word", this terms are similar.