Lack of concentration and Obliviousness

Obliviousness and lack of concentration are semantically related. In some cases you can use "Obliviousness" instead a noun phrase "Lack of concentration".

Obliviousness noun - A state of being disregardful or unconscious of one's surroundings, concerns, or obligations.

Lack of concentration and obliviousness are semantically related. You can use "Lack of concentration" instead a noun "Obliviousness".