A "trend" can mean what is in style/pattern OR a direction.
“trend”可以指现在流行的风格/模式或方向。
Ex) "Those shoes are in trend"
“那些鞋很流行。”
"A trend of people going to shop happens during the holidays"
“人们在假期购物的趋势正在形成。”
"The prices are trending upwards"
“价格呈上升趋势”
Tendency suggests an event is more likely or common.
倾向表示某一事件更有可能或更常见。
Ex) "She has the tendency to get mad when she is hungry"
"她饿了就容易生气"
“trend”通常用来描述新的趋势(变得普遍的事情)。
"Pointy hats seem to be the newest fashion trend among teenagers."
“尖头帽似乎是青少年的最新时尚潮流。”
"You've been coming to class late for the past few days. I hope this isn't becoming a trend for you."
“你这几天上课都迟到了。我希望这不会成为你的一种趋势。”
Tendency is used to describe inclinations or habits:Tendency用于描述倾向或习惯:"She has a tendency to tap her feet when she's nervous." This is the same as "She tends to tap her feat when she is nervous."“她紧张的时候喜欢用脚打拍子。”这和“当她紧张时，她倾向于轻拍她的技艺”是一样的。"To tend" is the verb form of tendency.“To tend”是tendency的动词形式。