Font weight is basically its strength or prominence if you think about how hard you have to press the pencil then strength comes to mind if you think about how hard you have to squint then prominence comes to mind.
Various fonts come in various weights. Some fonts come in only 2 weights normal
and bold
For TrueType fonts it is somewhat standardized in a 100 to 900 system where 400=normal
and 700=bold
100
200
300
400
500
600
700
800
900
```css p.normal { font-weight: normal; }
p.thick { font-weight: bold; }
p.thickest { font-weight: 900; }