量|りょうryou[1]atamadaka (head-high)

1. noun, noun (suffix)quantity; amount; volume; capacity; portion (of food)
   彼女かのじょはかなりの量りょうの酒さけを飲のんだ。↗

   She has had quite a lot to drink.
2. noungenerosity; magnanimity; tolerance
3. nounpramana (means by which one gains accurate and valid knowledge; in Indian philosophy)

• Synonym数量すうりょうNeutralNeutral word for a count or amount, common in statistics and product listings like 「数量限定」; 「量」is more colloquial and general, and can also mean capacity or generosity.
• Synonym分量ぶんりょうNeutralThe amount by weight or volume, often the portion of food or medicine, as in 「分量が多い」; 「量」is the general word for amounts of any kind.
• Synonym嵩かさNeutralBulk or volume — how much space something occupies, as in 「嵩が張る」(bulky, takes up room); 「量」is the more general word.
• Synonym体積たいせきNeutralMath and physics term for the amount of three-dimensional space a solid occupies. 「量」is the everyday word for amounts of any kind, not just space.
• Synonym容積ようせきNeutralThe capacity of a container — how much it can hold, as in 「タンクの容積」. 「量」covers amounts generally, not just what containers hold.
• Related数かずNeutralA count or number of things counted one by one. 「量」 mostly covers amounts not tallied item by item, such as 「水量」 and 「食量」.
• Related大きさおおきさNeutralSize — how big something is, its dimensions or scale, as in 「箱の大きさ」; 「量」is about more versus less, as in 「量が多い」.
• Related量目りょうめWrittenRare written word for weight as measured on a scale, mainly for weighing goods; everyday speech uses 「重さ」. 「量」is the general word for amounts.
• Antonym質しつNeutralQuality, as opposed to 「量」, which is about amount; often seen in 「量より質」and 「質と量」.

Default to 「量」for amounts. Say 「数量」for counts in statistics and product listings, 「数」for countable numbers, 「分量」for portions of food or medicine, 「体積」and 「容積」for space and container capacity, and 「量と質」for the quantity-versus-quality contrast.

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

1. かさ
2. （リョウ）数すうの多寡たかや、容積ようせきや体積たいせきの大小だいしょうについての程度ていど。質しつと対照たいしょうして考かんがえられるもの。
3. （リョウ）大量たいりょう、多量たりょう。