Bonfire and Wildfire

Bonfire noun - A large outdoor fire that is lighted as a signal or in celebration.

Wildfire and bonfire are semantically related In some cases you can use "Wildfire" instead a noun "Bonfire".

Wildfire noun - A raging and rapidly spreading conflagration.

Bonfire and wildfire are semantically related in fire topic. You can use "Bonfire" instead a noun "Wildfire", if it concerns topics such as large fire.