Big shot and Hotshot

Big shot noun - One of high position or importance within a group.

Hotshot and big shot are semantically related In some cases you can use "Hotshot" instead a noun phrase "Big shot".

Hotshot noun - A person with a high level of knowledge or skill in a field.

Big shot and hotshot are semantically related in dignitary topic. Sometimes you can use "Big shot" instead a noun "Hotshot", if it concerns topics such as something or someone important.