I already know of two non-homograph ones: insight and billow.
Insight /ˈɪnsʌɪt/ is phonemically identical to incite /ɪn'sʌɪt/ except for where the stress falls (first syllable in insight, second syllable in incite). This means the words can still be told apart when spoken, even though all the consonants and vowels are the same.
Billow /ˈbɪləʊ/ and below /bɪ'ləʊ/ similarly differ only by stress in standard British and American English pronunciation (as is supported by the phonemic transcriptions in dictionaries I've checked) which is why it counts for the purposes of this question, even though in some accents the unstressed vowel in below might be reduced for example.
Because the many homographs, especially initial-stress-derived nouns, that are distinguished only by stress can be found among this large list on Wikipedia, I am particularly interested in non-homograph pairs (like insight/incite, or below/billow, but not project/project).
Are there other pairs of words in English that have different spellings and different meanings, and can only be told apart in speech because they have different lexical stress? Is there already available a collection of examples of the importance of lexical stress in English?