In the phonetic alphabet it's /e:/ vs. /ei/ and /o:/ vs. /ou/.
If you're an English speaker, you can be forgiven for a very stereotypical trait of the English accent. English speakers have a real hard time with the /e/ or /e:/ sounds as well as the /o/ and /o:/ sounds. Most English dialects don't have either a monophthong /e/ or /o/. Both the long and short tend to get heard as /eɪ/ and /oʊ/.
French enchanté /ɑ̃ ʃɑ̃ te/ is heard and borrowed as /ɑn.ʃɑn.teɪ/. German gehen /ge:n/ is heard as "gain" /geɪn/. And Japanese /o:/ and /ou/ both get heard as /oʊ/.
It's arguably a minimal pair in Japanese: 負う /ou/ (to carry), 王 /o:/ (king).
If you're an English speaker, you can be forgiven for a very stereotypical trait of the English accent. English speakers have a real hard time with the /e/ or /e:/ sounds as well as the /o/ and /o:/ sounds. Most English dialects don't have either a monophthong /e/ or /o/. Both the long and short tend to get heard as /eɪ/ and /oʊ/.
French enchanté /ɑ̃ ʃɑ̃ te/ is heard and borrowed as /ɑn.ʃɑn.teɪ/. German gehen /ge:n/ is heard as "gain" /geɪn/. And Japanese /o:/ and /ou/ both get heard as /oʊ/.
It's arguably a minimal pair in Japanese: 負う /ou/ (to carry), 王 /o:/ (king).