The "make" refers to the manufacturer - Ford, Toyota, Honda, BMW, Fiat etc. The "model" refers to the particular style within each manufacturer's range of products.
The proper use of 'make' and 'makes' are the following:I make.You make.They make.He or she makes.It makes.( A noun) makes. Example: Sally makes delicious soup.
A service is intangible, that is you cannot touch it, such as a haircut or a massage. You cannot touch the act of giving a massage. A product, on the other hand, is tangible. It can be touched. For...