Answer :
A substitute
has the same traits, preferences or goals as the normal goods while a
complement is an additive or an addition to enhance the attributes of a
product. An example of a perfect substitute is fruits. For instance, a consumer
normally buys both apple and oranges in the grocery store. The prices of the
apples and oranges in the market are the same. When the price of an apple
doubles, the demand for an orange will also increase. This means that the buyer
would buy more oranges as substitute to the apples. An example of a complement
is a creamer. When a consumer buys coffee, he tends to buy a creamer to
complement with his coffee. Complements go together with the normal goods as
enhancement.