Parvenu and Small potato

Parvenu noun - One who has recently acquired wealth and social position.

Small potato and parvenu are semantically related In some cases you can use "Small potato" instead a noun "Parvenu".

Parvenu and small potato are semantically related in unimportant person topic. Sometimes you can use "Parvenu" instead a noun phrase "Small potato", if it concerns topics such as person of little importance.