Leading edge and Red hot

Leading edge noun - The leading or most important part of a movement.

Red hot and leading edge are semantically related In some cases you can use "Red hot" instead an adjective phrase "Leading edge".

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

Leading edge and red hot are semantically related in highest level of development topic. Sometimes you can use "Leading edge" instead an adjective phrase "Red hot".