This is the 1466th most frequent Japanese word.
自動車
Automobile.
Here, 自動車 is used to denote the general concept of automobiles or vehicles as a mode of transport.
自動車はとても便利な移動手段です。
Automobiles are a very convenient means of transportation.
In this sentence, 自動車 is used to refer to an individual automobile that someone acquired.
彼は新しい自動車を購入しました。
He bought a new automobile.
自動車 here is part of the compound noun 自動車産業, which refers to the automobile industry, showcasing its economic significance.