A name was a word or phrase that constitutes the distinctive designation of a person or thing. A name was something that someone preferred to go by.

'Snivellus' stuck to him.

He was a loner. He didn't have no friends. At least, not anymore. Just because of that incident.

'Mudblood' was a name he didn't mean to use. A slip of the tongue of a slur. Lily didn't deserve him. He didn't mean to say it to her. He spent everyday, trying to talk to her, begging, only failing. He was desperate. She was his only friend, his first.

He didn't mean to.

He's used to the name now. He didn't want it. It wasn't him. He didn't like it. He loathed it.

You were assigned as his partner for potions. He didn't know anything about you, until now.

You were at least adequate in his favorite subject, enough to pass. You talked to him. Why would you? Wouldn't you know about him? The incident? He was hated by others, why wouldn't you?

Why would you call him 'Severus' instead?

He marveled at the fact.

You were currently eating lunch with him at a spot somewhere in the castle. It was just one of those days where the both of you didn't want to socialize or be seen in general.