Smart-ass and Swellhead

Smart-ass adjective - Making light of something usually regarded as serious or sacred.

Swellhead and smart-ass are semantically related. in smart aleck topic. In some cases you can use "Swellhead" instead a noun phrase "Smart-ass", when it comes to topics like person making wise remarks.

Swellhead noun - A conceited and self-centered person.

Smart-ass and swellhead are semantically related. You can use "Smart-ass" instead a noun "Swellhead".