These are "h" tags. They are used for titles and subtitles. They range from h1 to h6

"p" tags are used for sentences and paragraphs. "p" tags create a line break every time they are used

 "pre tags are used for pre-formatted text. They will retain space and font-type when they are used"

This is an image tag, it's used for adding images to the screen

This is an unordered list
• dog
• cat
• mouse

This is an ordered list
1. dog
2. cat
3. mouse