Is there a technical term for words that have the same phonemes but are distinguished by syllabic emphasis?

E.g., abstract is æb-strækt, but emphasis on the first syllable is a different word from emphasis on the same syllable. Other examples: permit, convict. (Offhand it seems I can only think of words that are related in meaning, but I suspect there are examples of unrelated words. ETA: Found one: present.)

(I see that heteronym refers to words with the same spelling, but those can have different pronunciations, and I'm asking about the spoken word, without regard to spelling.)