Hardtop and Subcompact

Hardtop noun - A car that resembles a convertible but has a fixed rigid top.

Subcompact and hardtop are semantically related in car topic. In some cases you can use "Subcompact" instead a noun "Hardtop", when it comes to topics like vehicle driven on streets.

Subcompact noun - A car smaller than a compact car.

Hardtop and subcompact are semantically related in car topic. You can use "Hardtop" instead a noun "Subcompact", if it concerns topics such as vehicle driven on streets.