I have two word keyword, let's call it for example yellow submarine, I have bought a domain www.submarine.com and I want to create subpage, is it better to create www.submarine.com/yellow or www.submarine.com/yellow-submarine
IMO it's better www.submarine.com/yellow-submarine, but it's even better with their own subdomain: yellow.submarine.com
A tip for all DP users. When you write a URL on your post and don't want to be displayed as a live link, simply enclose it with [plain] and [/plain] So for example: If you write [plain]www.submarine.com/yellow-submarine[/plain], the post will display: www.submarine.com/yellow-submarine without making a live link.
since you want to optimize for the keyword yellow sbumarine, and your domain already has submarine, i guess a /yellow will make a nice reading as far as seo is conserned!
/yellow-submarine. yellow.submarine.com will make it a total new domain that you have to build links again for.