Do the words "be concerned about, over" mean same as "be concerned with, in"?

[eggcracker]

Do the words "be concerned about, over" mean same as "be concerned with, in"?

1.There are few people who are concerned about the existence of cyanide in the material.
2.There are few people who are concerned over the existence of cyanide in the material.
3.There are few people who are concerned with the existence of cyanide in the material.
4.There are few people who are concerned in the existence of cyanide in the material.

Do the sentence1, 2, 3, 4 mean the same?

 

[bhaisahab]

Re: Do the words "be concerned about, over" mean same as "be concerned with, in"?

1.There are few people who are concerned about the existence of cyanide in the material.
2.There are few people who are concerned over the existence of cyanide in the material.
3.There are few people who are concerned with the existence of cyanide in the material.
4.There are few people who are concerned in the existence of cyanide in the material.

Do the sentence1, 2, 3, 4 mean the same?

3 and 4 are not natural.

 

[eggcracker]

Re: Do the words "be concerned about, over" mean same as "be concerned with, in"?

3 and 4 are not natural.

Do you mean "be concerned with" and "be concerned in" are not natural? Or it's unnatural to use those expressions in sentence 3 and 4?

 

[bhaisahab]

Re: Do the words "be concerned about, over" mean same as "be concerned with, in"?

Do you mean "be concerned with" and "be concerned in" are not natural? Or it's unnatural to use those expressions in sentence 3 and 4?

There may be contexts where "concerned with" and "concerned in" are OK, but not in those sentences.