山系|さんけいsankei[0]heiban (flat)

1. nounmountain range; mountain system

• Synonym連峰れんぽうNeutralA row of connected peaks, as in 「立山連峰」; often used in mountain names. It points to a line of peaks rather than a whole geographic system.
• Synonym山脈さんみゃくNeutralWhen written 「山脈」 it is also read やまなみ; it refers to unbroken mountains, stressing the scenery as seen from afar.
• Synonym連山れんざんWrittenMountains running in a line; a written-style synonym of 「連峰」.
• Related山並みやまなみNeutralMountains seen stretching into the distance; it carries a scenic, lyrical nuance, unlike the geographic 「山系」.
• Related山岳地帯さんがくちたいNeutralA region where many high peaks and rugged terrain spread out; the focus is on the area itself, not the range as a landform.
• Related群山ぐんざんWrittenA written-style word for a group of mountains; fairly uncommon, and it does not suggest a systematic geographic structure.

Use 「山系」 for a connected mountain system as a geographic unit, e.g. 「ヒマラヤ山系」. A row of peaks (often in names) is 「連峰」; the view of rolling mountains is 「山並み」; a mountainous region is 「山岳地帯」. 「群山」 and 「連山」 are written-style words.

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

1. 連つらなった複数ふくすうの峰みねが、一ひとつのまとまりをなしている地形ちけい。