This is the 2864th most frequent Japanese word.
じん
"じん" (jin) refers to a person or people of a specific nationality or group (e.g., アメリカじん = American).
The word 'じん' does not appear in this sentence. Let's include 'じん' in the analysis for future sentences.
彼は親切な人です。
He is a kind person.
The '人 (じん)' here represents people when combined with numbers to indicate quantity.
この会社の従業員は20人です。
This company has 20 employees.
The '日本人 (にほんじん)' refers to Japanese people, demonstrating 'じん' usage in words designating nationality or ethnicity.