名詞 friction:

1. a state of conflict between persons
   同義詞：clash
2. the resistance encountered when one body is moved in contact with another
   同義詞：rubbing
3. effort expended in moving one object over another with pressure
   同義詞：detrition, rubbing

1. My daughter and son always have frictions.
   我女兒和兒子總發(fā)生矛盾。
2. Friction against the rock, combined with the weight of the climber, caused his rope to break.
   與巖石之間的摩擦加上攀登者的重量，使得繩子斷了。

fric.tion

n.（名詞）
The rubbing of one object or surface against another.
摩擦：將一個(gè)物體與另一物體的表面互相摩擦
Conflict, as between persons having dissimilar ideas or interests; clash.
矛盾：由人們之間不同的觀點(diǎn)或利益造成的沖突；抵觸
Physics A force that resists the relative motion or tendency to such motion of two bodies in contact.
【物理學(xué)】 摩擦力：一種阻止兩個(gè)相接觸物體之間的相對(duì)位置移動(dòng)的發(fā)生的力

來(lái)源：
Latin frictiô frictiôn-
拉丁語(yǔ) frictiô frictiôn-
from frictus [past participle of] fric3re [to rub]
源自 frictus [] fric3re的過(guò)去分詞 [摩擦]

【引伸】
fric.tional
adj.（形容詞）
fric.tionally
adv.（副詞）