I have a client who has a company which has two functions. These can be represented by the words 'A,B,C and D'. ABC is one of the functions and C is the second.
When I did a keyphrase search AC has a good result ie high search low competition, as does BC, and also CD. The phrase ABC isn't a good keyphrase
The client needs a domain name. The domain name ABCandD.co.uk would have a mixture of all the good phrases but would Google stop at the word 'and'? Also would the domain suffer from the fact that ABC is not a great search term.

Any advice would be greatly appreciated.