[whycome]

I was just trying to illustrate it better. I think the majority will say "howz new immigrants."

There are a few weird "same-spelling" words. You can refuse to throw refuse in the trash can. You can estimate how many estimates you might get. But I suspect that you're not a suspect in this case. But, if you get close, I'll close this thread.

[pests]

A large number of those are called heteronyms which include a noun and a verb, the noun getting the stress on the first syllable while the verb receives the stress on the second. But yes I agree.