Concern

1.Meaning

If something concerns you, it cause worry to you.

If you are concerned about something, you are worried about it.

2.Parts of speech

Adjective: concerned

Verb: concern

Noun: concern

Adverb: concernedly

3.Clarification

1.Parents are concerned (adjective) about their children's education.

2.There is growing concern (noun) that the financial tsunami will have great impact on the local economy.

3.As a teacher of English, my main concern (noun) is how to enhance my students English standards.

4.The water shortage concerns (verb) us all.

5.This new is of concern (noun) to all of us.