Dog-eat-dog and Tug-of-war

Tug-of-war and dog-eat-dog are semantically related. In some cases you can use "Tug-of-war" instead a noun phrase "Dog-eat-dog".

Tug-of-war noun - An earnest effort for superiority or victory over another.

Dog-eat-dog and tug-of-war are semantically related. Sometimes you can replace phrase "Dog-eat-dog" with "Tug-of-war", this phrases are similar.