What Is Who?
First up, let’s introduce this exceptionally tricky pronoun. It has many forms, and many a brave soul has cowered in the attempt to use it correctly.
Who
Who is a subject pronoun, like he, she, I, or they, but it’s the interrogative used for animate subjects. In other words, use it to ask a question about which person did something or is someone.
“Who is in charge here?” “Who asked you to go to the dance?” “Who is that?”
Whom
This is the bane of many an English-speaker’s existence. But it’s not as hard as you think: whom is an object pronoun, meaning if you could replace it with “him,” “her,” “me,” or “them,” you’re good to go.
“Whom are you referencing?” “Whom did you ask to go to the dance?” “To whom are you speaking?”
Yeah, we know—it sounds stuffy. But if you want to be correct correct, that’s how it works.
And now, on to the spelling culprits.