It’s a comon phenomenon to be able to change a single letter in one word to get a different word. This usually does not make a big change in the pronunciation. Examples: drain -> grain -> train; change -> charge; step -> stop; latter -> letter -> litter. There are many other examples where the only pronunciation change is the letter that changes.
However, sometimes such a change causes a massive change to pronunciation. Not every sound will change, but most do. This is most comon with short words. Examples: die -> dig; out -> put; eat -> fat. Because of that, lets restrict this to words at least 5 letters long. Here are a few that I’ve come up with:
There’s more than that one. It’s what I learned to call a capitonym, although the Wiki page I just linked to has a somewhat different definition. There’s lots more with different pronunciations if you consider geographic and personal names. For instance: rainier has three different pronunciations depending on whether you mean “more rainy”, the mountain, or the Prince.
Whenever I see the word “secreted”, it usually means that something has been hidden. But I always picture it as having been oozed out from a bodily orifice. Sometimes makes for some weird imagery!