euphemism / euphuism
A soft word for a hard fact versus an ornate style.
A euphemism is a mild word used in place of a blunt one. Euphuism is an ornate, balanced prose style. If you mean the soft word, use euphemism.
Examples
Usepassed away is a euphemism
UseElizabethan euphuism
Avoidpassed away is a euphuism