Lowborn and Rock-bottom

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

Rock-bottom and lowborn are semantically related. In some cases you can use "Rock-bottom" instead an adjective "Lowborn".

Rock-bottom adjective - Of, relating to, or located at the bottom.

Lowborn and rock-bottom are semantically related. Sometimes you can use "Lowborn" instead an adjective phrase "Rock-bottom".