concern - noun
Definition
interest, worry ("express concern about")
Example Sentences
Do you have any concerns about this new job?His concern was about the treatment of the children.

care - verb
Definition
to like; to protect; to feel worry or interest
Example Sentences
I care about all my students.Do you care about the environment?

common - adjective
Definition
usual; same for all
Example Sentences
We have many common experiences.That's not really very common in this part of the world.

chase - verb
Definition
to run or go after someone or something
Example Sentences
The police chased the robber across the town.My dog chases our cat every day around the house.