You can automatically be a citizen through descent of most countries in Europe and Asia, and everywhere in North America.
https://en.wikipedia.org/wiki/Jus_sanguinis#Jus_sanguinis_st...
https://en.wikipedia.org/wiki/Jus_sanguinis#Jus_sanguinis_st...
Say one of your parents is a citizen of some other country.
If they're Canadian, you're a Canadian citizen. Period. The process is to get your documents that prove it. You don't apply for citizenship, you apply for proof.
In many European countries you are not a citizen. The process is to become one by descent. You apply for citizenship.
Very different.