Also called: Page title, Meta title
A good one says what the page is and where: “Sourdough bakery in Shoreditch | Rise Bakery” beats “Home”. Keep it under about 60 characters so it isn't cut off.
Glossary
Title tag
Your page's name in Google: the blue headline in search results and the text on the browser tab.
All terms
Be the first name owners find.
Run the free check, then press Optimize. Then back to the dogs.