Do Keywords In Url Matter?

Hi everyone, I’m new to this forum as well as to SEO. I’ve been doing a lot of reading in the past weeks and I’m hoping to learn more from the pros around here. I thank you for your wisdom and aplogize for my lack of in advance

Question: Does a page get better ranking when the URL includes the keyword? Consider the following cases, who would rank better by default?

keyword: monkey food

Case 1: www.monkeyfood.com
Case 2: www.petexperts.com

How about:

Case 1: www.petexperts.com/monkeyfood.html
Case 2: www.petsuperstore.com/buy.html

Thanks!