This is the 1171st most frequent Japanese word.
心配
Worry; concern.
Here, '心配' is used as a noun accompanied by 'です', expressing the speaker's feeling of concern or worry.
明日の試験は心配です。
I'm worried about tomorrow's exam.
In this example, '心配' is used as a verb ('心配する') in its conjugated form ('心配しています'), showing the act of worrying about someone's well-being.
あなたの健康を心配しています。
I am worried about your health.
'心配ありません' employs '心配' as a noun with a negative construct, indicating that worry or concern is not necessary.