Misspelling

Yesterday I wrote "bellowing out steams and flames from its gigantic chimneys." A friend of mine was kind enough to point out "bellowing" is funny.
He is right. I meant "billowing". The difference of one letter makes a big difference. I can hear a roaring sound from the "bellow" while I can see a waving steam from "billow". I like both audible and visual words.
I appreciate his consideration when he pointed out my mistake by email in apparent consideration to save my embarrassment I would have if he did it on the blog. But I would have appreciated more if he had written it here.