That is to say, a bootstrapped business can be a startup (if it gets to the point where it focuses on fast growth) but not necessarily (as in the case of businesses with gradual or no growth).

You could start a bootstrapped business and only grow to the point where is sustainable in the long term, and just provides you with a decent level of income so that you can work on something you like and under conditions that suit you.

My company is bootstrapped, but we're still very focused on growth.

Exactly.

My company is bootstrapped, but we're still very focused on growth.

Same here. We intend to build a billion dollar business, but we are (so far) bootstrapping. That doesn't, however, mean we'll never take outside money, but there's no need to right now. Once we prove the model and get some initial traction, it might make sense to do it just to fund expansion, but that's a decision for another day.