"Accross" is the incorrect spelling of "across." "Across" generally implies a connection between two points or the traversal of a surface or distance from one side to another.
"Carier" is an incorrect spelling of "carrier." "Carrier" is the correct term, referring to a person, thing, or organism that carries or transports something.
"Currious" is an incorrect spelling of "curious." "Curious" is the correct and widely recognized term, signifying an eager desire to know or learn something.
Reffered is an incorrect spelling of "referred". Referred is the correct spelling, denoting the past tense or past participle form of the verb "refer." It signifies the act of directing someone's attention to a source, person, or thing.