May you show us the passage?...
First of all, we should know that domain specific words are those are low frequency and content-specific. So, in this sentence we know that the topic being discussed is a restaurant, so domain-specific words will be those that are used frequently in relation to restaurants.
These are: hostess, waiter, menu
A simile is defined as "<span>a figure of speech involving the comparison of one thing with another thing of a different kind, used to make a description more emphatic or vivid" Based on this, it might be said that there is a comparison between the narrator and two birds. It might be understood that he tends to use things from other people and he gives them credit for. </span>
