noun / verb
concern
kun-SURN/kʌnsˈɝn/
Interest in a matter that affects someone's welfare.
He checks the wilted plant with concern, gently supporting a drooping leaf.

Etymology
The early image was sifting or mixing together in a sieve, later used figuratively for touching or relating to something. A matter that relates to you can affect your interests, giving concern its sense of worry.
In context
when you see a situation where ownership interest moves from one spouse to the other is that a concern of some level of fraud potentially I I would call it a red flag
More examples
- She shows genuine concern for her elderly neighbor.
- The rising cost of medicine concerns many families.
- Safe drinking water is the community's main concern.
- These changes concern everyone who relies on the clinic.
Forms
concern · concerns · concerned · concerning