I have an unusual request from a client that i have honor.

My client wants me to add an 3 words, which are search terms, to each product. (It seems unusual but it does kind of make sense if you knew the product line and cientelle ;-) )

there search words however, would not necessarily be shown on the product page, but they should bring up the product if entered into the website search box.

so am wondering where in the DB i would put these search terms, where the ZC Search Function would find them?
Should i create a new column in the products_description table?

or maybe i should put on the product page, in a div and set the CSS to display none?

can someone advise?, thank you!