What do you do? What do you make?
These simple words cause lots of confusion for English language learners. I've spent time helping a very wide range of ESL classes – from advanced adult education and community college students to intermediate English students in summer courses and regular university courses – struggle with idioms with “make” and “do.”
Here is a quick, imprecise guide that helps clarify the issue.
Look at some common expressions with “do”.
Do is used to describe an activity that you have to do, often over and over again. For instance, we “do the dishes” and “do the laundry” many times. Do also contains an element of duty and responsibility.
Now, take a look at some expressions with “make”.
• Your make reservations.
Make is used to describe a creative activity or something you choose to do. You choose, for instance, to make plans, make friends, and make decisions. You have choices.
Why do we say “make dinner” if we have to do it over and over? Perhaps because cooking is seen more as a creative activity than a chore. But cleaning the table, and cleaning the dishes are just chores so we say “do the table” and “do the dishes.” That's also why Americans say “make money” instead of “do money.” Making money is seen as both creative and a choice. Idioms are cultural. Sometimes Americans will use the verb “make” in a way that might seem strange, but “make a decision” to “do your best” and learn practical workplace expressions.