'Someone' and 'something' are both indefinite pronouns comprised of two parts:
- some + one
- some + thing
Someone as a Pronoun
- Those indefinite pronouns made up of -one refer only to unspecified or unknown humans.
Something as a Pronoun
- Those indefinite pronouns made up of -thing refer only to unspecified or unknown things (non-humans).
Someone as a Noun
As a noun, 'someone' refers to an unnamed person we might or might not know.
Are you going to buy it for that special
Something as a Noun
'Something' as a noun can both refer to a person or thing of some importance. Remember that in this case it is used mostly in informal English.
She is really
You've never met Adam. He's
Something as an Adverb
'Something' can also be used as an adverb. It is synonymous to 'somewhat' and it means 'in some degree'.
'Something' can also be used as an intensifier (intensive adverb) to put an extra emphasis on an adjective.
My back hurts