海図|かいずkaizu[0]heiban (flat)

1. nounsea chart

• Synonym航海図こうかいずWrittenLiterary synonym of 海図. Use 海図 in ordinary contexts; reserve 航海図 for written or formal language where an elevated tone is intended.

Use 海図 as the neutral, general term for a sea chart; 航海図 is a literary synonym, so reserve it for written or elevated contexts.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 航海こうかいを目的もくてきとした、海洋かいようなどの水路すいろに関かんする地図ちず。