Czar and Head honcho

Czar noun - A person of rank, power, or influence in a particular field.

Head honcho and czar are semantically related In some cases you can use "Head honcho" instead a noun "Czar".

Head honcho noun - An important influential person.

Czar and head honcho are semantically related in leader of military or other organization topic. Sometimes you can use "Czar" instead a noun phrase "Head honcho".