I'm an A tag. I make things go linky-linky.
I'm a bold tag, I make things IMPORTANT
A span is a generic inline tag with no default styles. Just like white label beer.
A small tag's built in style is that it's contents are smaller than that newborn kitten your kid sister loved so much
A big tag makes things bigger...this is the tag guys with SUVs would use...something about overcompensating