Products that are similar to each other are called primary products and substitute products. Most of the time, these products have the same function and therefore, they can replace each other.
Primary products, however, are more expensive and standardized and may be of higher quality, while substitute products are cheaper, popular, and of lower quality.
Although you have not shown the table your question refers to, you can use the following products to fill it out.
- Primary product: Butter.
- Substitute product: Margarine.
- Primary product: Sugar.
- Substitute product: Sweetener
- Primary product: Perfume
- Substitute product: Colonia
- Primary product: cooking gas.
- Substitute product: Firewood.
you can find more information at the link below:
https://brainly.com/question/14842049?referrer=searchResults
https://brainly.com/question/15460689?referrer=searchResults
