The idiom "bury the hatchet" means to end a conflict or disagreement, or to make peace between two parties who have been at odds. It suggests that the past is buried and forgotten, and that both sides are ready to move forward together in harmony.

The idiom "you know better than that" is used to express a disbelief or disagreement with someone's actions, behavior, or decision. It implies that the speaker knows more about a situation and believes the other person should have acted differently.

The idiom "in the cahoots" means to be secretly or conspiratorially involved with someone or something, often to plan or scheme against others. It can also mean to be in a friendly or informal relationship with someone or something.

The idiom "you can’t teach an old dog new tricks" means that someone or something is stubborn, resistant to change, or not capable of learning new things.

The idiom "cross paths" means to meet someone or something by chance while going about one's daily activities or travels. It can also refer to the coincidental encounter of two individuals who share a common interest or connection.