this (EN)

determiner, pronoun, adverb, interjection

determiner “this”

1. (modifying a noun) refers to something or someone that is close by or currently being discussed
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   This book on the table is my favorite novel.
2. (modifying a time reference) present or immediately upcoming
   I have a dentist appointment this afternoon.

pronoun “this”

1. refers to a specific thing or item that is being pointed out or identified
   This is my grandmother.

adverb “this”

1. to the extent indicated
   Hold the rope this tightly to ensure it doesn't slip.

interjection “this”

1. expresses strong approval of what has just been said or written
   ― We should recycle more to save the planet. ― This!