Lowborn and Second-rate

Lowborn adjective - Belonging to the class of people of low social or economic rank.

Second-rate and lowborn are semantically related. in poor topic. In some cases you can use "Second-rate" instead an adjective "Lowborn".

Second-rate adjective - Of average to below average quality.

Lowborn and second-rate are semantically related. Sometimes you can use "Lowborn" instead an adjective phrase "Second-rate".