Chutney or relish

one keeps longer than the other but cant remember which?

Neither.
Although chutney is most widely known as a condiment originating in India, the concept has spread worldwide and mutated to suit local needs as most foods do. The term chutney comes from the East Indian chatni, meaning "strongly spiced," and is described as a condiment which usually consists of a mix of chopped fruits, vinegar, spices and sugar cooked into a chunky spread. Most chutneys are on the spicy-hot side, but it's easy to adjust the heat factor if you make your own.

Chutneys are traditionally served with curried foods. The sweet and tart flavor combined with a touch of spice compliments strong-flavored meats such as wild game, but also works well with beef, pork and chicken. Chutney perks up cheeses and sweeter versions make a fabulous spread for crackers and breakfast toast or bagels.
The difference between chutney and relish
Chutney and relish are often used interchangably as condiment terms. The confusion is understandable. Chutneys can be savory, and relishes can be sweet. In general, chutneys have a chunky spreadable consistency much like a preserve, whereas relishes are hardly cooked, use less sugar if any, and are more crunchy to the bite.

one keeps longer than the other but cant remember which!

Neither.
Although chutney is most widely known as a condiment originating in India, the concept has spread worldwide and mutated to suit local needs as most foods do. The term chutney comes from the East Indian chatni, meaning "strongly spiced," and is described as a condiment which usually consists of a mix of chopped fruits, vinegar, spices and sugar cooked into a chunky spread. Most chutneys are on the spicy-hot side, but it's easy to adjust the heat factor if you make your own.

Chutneys are traditionally served with curried foods. The sweet and tart flavor combined with a touch of spice compliments strong-flavored meats such as wild game, but also works well with beef, pork and chicken. Chutney perks up cheeses and sweeter versions make a fabulous spread for crackers and breakfast toast or bagels.
The difference between chutney and relish
Chutney and relish are often used interchangably as condiment terms. The confusion is understandable. Chutneys can be savory, and relishes can be sweet. In general, chutneys have a chunky spreadable consistency much like a preserve, whereas relishes are hardly cooked, use less sugar if any, and are more crunchy to the bite.