七つ・７つ|ななつnanatsu[2]nakadaka (mid-high)

1. numeralseven
   海賊かいぞくたちは７つの海うみを航海こうかいした。↗

   The pirates sailed the seven seas.
2. nounseven years of age
3. nounfour o'clock (old time system)

• Synonym七しちNeutralThe bare numeral for the number seven itself, read 「しち」, as in 「七時」 and 「七月」; 「七つ」 is what you use to count objects.
• SynonymセブンCasualA colloquial loanword, mostly seen in compounds and store names like 「セブンイレブン」; rarely used on its own.

Count seven things with 「七つ」; for the number seven itself use 「七」. The loanword 「セブン」 appears mainly in store names and compounds, so it rarely replaces either.

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

1. 個数こすうが7個こ又または順番じゅんばんが7番目ばんめであること。
2. 7歳さい。
3. 江戸えど期き以前いぜんの時刻じこくの表現ひょうげん。暁あかつき七ななつ（あけななつ、寅とらの刻こく）は午前ごぜん4時じ、昼ひる七ななつ（ひるななつ、申さるの刻こく）は午後ごご4時じに当あたる。