岩がん石せき

が

ん

せ

き

Common wordJLPTN1Freq.FrequencyTop 50,000

Meanings

1

General term for rock or rocks, often used in geological, scientific, or descriptive contexts. Can refer to a single rock or rock as a material.

There are many old rocks in this area.

岩がん石せきのサンプルを分ぶん析せきした。

We analyzed rock samples.

〈物もの〉が崩くずれるfor rock to crumble/collapse
大おお雨あめで岩がん石せきが崩くずれて道みちをふさいだ。
Heavy rain caused rocks to collapse and block the road.
〈物もの〉を採さい取しゅするto collect/sample rock
研けん究きゅう者しゃは火か山ざん付ふ近きんで岩がん石せきを採さい取しゅした。
The researcher collected rock samples near the volcano.
〈物もの〉が風ふう化かするfor rock to weather/erode
長ながい年ねん月げつをかけて岩がん石せきが風ふう化かした。
Over many years, the rock weathered away.

石いしN4
石 is the common, everyday word for a stone or small rock, while 岩石 is a more formal, often scientific term for rock as a material or geological substance.
岩いわN3
岩 usually refers to a large, solid rock or crag seen in nature, whereas 岩石 is a broader term covering rock material of any size, often in a scientific context.
石せき材ざい
岩石 is a geological term for rock as a natural substance, whereas 石材 refers to stone specifically intended for construction.

鉱こう物ぶつN2
岩石 (rock) is a solid mass typically made of one or more minerals mixed together, whereas 鉱物 (mineral) is a single, chemically defined substance.

Compound of 岩 (いわ, 'rock') and 石 (いし, 'stone'), both native Japanese words, combined using their on'yomi readings (gan + seki).

岩がん石せき系けい

rock system

primary rocks

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