This is the 15503rd most frequent Russian word.
преемником
"Преемником" means "successor" in English.
Here, 'преемником' (successor) is used in a familial context to indicate someone who follows another's role, such as continuing a legacy.
Мой отец считает меня своим преемником.
My father considers me his successor.
'преемником' in this sentence implies succession in a professional or hierarchical sense, indicating assuming a position after someone else.
Новый президент стал преемником старого.
The new president became the successor of the former one.
In this context, 'преемником' signifies succession in a corporate or organizational setting.