Difference between using a に particle with a noun


What's the difference in these 2 sentences?

禁止します

禁止にします




禁止にします sounds like you will _start_ to prohibit something, or you _decided_ to
prohibit something. This type of に is used in other set phrases related to
making a decision (～に決める, ～に決定する). If something has been prohibited for a long
time and it is going to be prohibited also in the future, then you have to say
禁止します. If you explicitly want to say you prohibit something _from now on_ ,
禁止します works but 禁止にします would be more natural.

  * タバコは禁止します。  
Smoking is prohibited. / We will prohibit smoking.

  * タバコは禁止にします。  
We will prohibit smoking. / We decided to prohibit smoking.




禁止にします sounds like you will _start_ to prohibit something, or you _decided_ to
prohibit something. This type of に is used in other set phrases related to
making a decision (～に決める, ～に決定する). If something has been prohibited for a long
time and it is going to be prohibited also in the future, then you have to say
禁止します. If you explicitly want to say you prohibit something _from now on_ ,
禁止します works but 禁止にします would be more natural.

  * タバコは禁止します。  
Smoking is prohibited. / We will prohibit smoking.

  * タバコは禁止にします。  
We will prohibit smoking. / We decided to prohibit smoking.

