It’s considered ironic that he praises the castle atmosphere because the atmospheres is in actuality quite tense seeing as the Lord and Lady Macbeth are in disagreement about what to do with him. It’s also ironic because the Lady is hospitable but only in order to lower his guard so that she can kill him.
Pizza and burgers are my favorite snacks.
In the sample sentence above, the underlined word serves as a coordinating conjunction that links two words together (pizza + burgers).
I'm confused... are you asking if this is the correct answer?