From wikipedia, (I know not the best sources....but)
A condiment is a substance applied to food, usually in the form of a garnish, powder, or spread, to enhance or improve the flavor. Condiments are typically smeared with knives, squirted, or sprinkled onto other foods.
Commercially prepared condiments are usually packaged in glass or plastic containers. Plastic has displaced glass in a number of applications where plastic's squeezability is an advantage, such as for ketchup, mustard, mayonnaise, and other condiments with a paste-like consistency.
In some commercial venues, such as airplanes and fast food restaurants, condiments are packaged in single-serving packets.
Examples of condiments include:
Bacon, often called "bacon bits"
Barbecue sauce
Belacan
Butter
Brown sauce
Chutneys
Cocktail sauce
Fish sauce
Fry sauce
Horseradish sauce
Hot sauces based on chili, including Tabasco sauce
Ketchup and Tomato Sauce
Lime and Lemon juice
Mayonnaise
Mixed pickle
MSG
Mustard
Pepper
Raita
Relish
Remoulade
Salsa
Salt
Sambal
Sauerkraut (sometimes seen as a condiment on sausages or hot dogs, occasionally seen as a side dish)
Soy sauce
Steak sauces such as A1, Heinz 57, and HP Sauce
Sweet chilli sauce
Tabasco sauce
Tajín
Tartar sauce
Trassi
Tzatziki (occasionally seen as an appetizer, more often used as a condiment that accompanies gyros and other dishes)
Wasabi
Worcestershire sauce
Pariah... thoughts?