каса́ться

To relate or belong to; to have reference to or connection with; to affect the interest of; to be of importance to

• This doesn't concern you, Tom.

  Это тебя не касается, Том!

  Tatoeba · CK · CC BY 2.0 FR

• This matter doesn't concern you.

  Это дело тебя не касается.

  Tatoeba · CK · CC BY 2.0 FR

каса́ться

To engage by feeling or sentiment; to interest

каса́ться

To make somebody worried

That which affects one’s welfare or happiness. A matter of interest to someone

• To whom it may concern:

  Вниманию заинтересованных лиц.

  Tatoeba · Eldad · CC BY 2.0 FR

• That's none of your concern.

  Это не твоя забота.

  Tatoeba · CK · CC BY 2.0 FR

The placement of interest or worry on a subject

A worry; a sense that something may be wrong; an identification of a possible problem

The expression of solicitude, anxiety, or compassion toward a thing or person