Seijin vs Otona : The Difference in Meaning
As you might already know, today January 13th is a national holiday in Japan called “Seijin no Hi (成人の日 : Coming of Age Day)”, and in fact the coming of age ceremony called “Seijin Shiki (成人式)” took place around the country.
In Japan, young people come of age at 20 and are regarded as adults or “Otona (大人)”.
The Difference in Meaning between Seijin and Otona
Actually, both “Seijin (成人)” and “Otona (大人)” are the Japanese words for adults, but these words are slightly different in meaning.
Seijin are people over the age of 20 who are regarded as adults by law.
Otona are people whose way of thinking and attitude have matured. Hence, even children under the age of 20 can be regarded as Otona.