First-rate and Whizbang

First-rate adjective - Of the very best kind.

Whizbang and first-rate are semantically related In some cases you can replace term "Whizbang" with "First-rate", this terms are similar.

Whizbang noun - A small high-velocity shell; it makes a whizzing sound followed by a bang when it hits.

First-rate and whizbang are semantically related in great topic. Sometimes you can use "First-rate" instead an adjective "Whizbang".