How to target seperate keyword groups?

[mgob]

Say you are operating medical site where all the doctors, general medicines are.

One page targets say dentists, another one targets ENT etc.

How to target separate kw groups from a single campaign?

[martinsmith]

we can prepare different keywords for two different campaigns i.e. dentists and ENT.

[limbo]

In a single campaign it will be a disaster. Try splitting the big campaign into two small ones.

Or, just do two campaigns.

[ksmith29]

I don't understand the necessity of the question.

Both these two fields are separate and have their own audience. Why don't just run two campaigns?

I am guessing OP is asking for a PPC or similar campaign. So, why risk loosing money at all??