This is the 215th most frequent Persian word.
خاطر
"Khater" (خاطر) in Persian means "mind," "memory," or "thought."
In this sentence, 'خاطر' is used in the expression 'به خاطر', which is a common phrase meaning 'because of' or 'for the sake of'.
او را به خاطر شجاعتش تحسین میکنم.
I admire him for his bravery.
In this sentence, 'خاطرش' means 'his memory' or 'his being dear', indicating personal affection or emotional attachment.
همیشه خاطرش برایم عزیز بود.
He was always dear to my heart.
Here, 'خاطرات' (plural form of 'خاطر') means 'memories', referring to recollections from past experiences.