Ablaze and Red hot

Ablaze adjective - Lighted up by or as by fire or flame.

Red hot and ablaze are semantically related In some cases you can use "Red hot" instead an adjective "Ablaze".

Red hot noun - One who is intensely or excessively devoted to a cause.

Ablaze and red hot are semantically related in passionate topic. Sometimes you can use "Ablaze" instead an adjective phrase "Red hot", if it concerns topics such as burning.