There are many expressions commonly used in English to express similarity.
There is no magic rule to help you remember them. You just have to learn them. Sorry!
Take a look at the examples below.
To stand out like a sore thumb.
If something or someone stands out like a sore thumb, they are very noticeable to other people because they are very different from the people or things around them.
E.g. I was the only one who didn’t wear a costume at the carnival party in Cologne. I stood out like a sore thumb.
Like herding cats.
This is used to refer to an impossible situation or task. It’s often used when describing the difficulty of organising people.
E.g. They are impossible to manage. The just don’t listen! They go off and all do their own thing. It’s like herding cats!
Have fun learning English!
Louise