this

here

prefixes someone's name or kinship title, used to call for their attention / suffixes someone's name or kinship title, usually functions both as a focus marker and signaling a question

this

(literally) he/him, this guy we're talking about / (arrogant) I/me, a male who ain't afraid of no one

(literally) she/her, this gal we're talking about / (arrogant) I/me, a female who ain't afraid of no one

(literally) this way, over here

(Northern Vietnam, familiar or humorous) I/me, your pal or gal

(chiefly Northern Vietnam) recently; nowadays

what is this?