1.(1) '惹' normally means 'to say or do sth on purpose'. 惹 现在一般是指 “故意地 挑衅他人;使他人生气”。
I am not in a good mood, so please leave me alone and don't make me angry / don't offend me. 我今天心情不好,不要 惹/招惹 我。
That 5-year old boy is very naughty often to make his mom angry. 那个5岁的小男孩很淘气,经常 惹 他妈妈生气。
Be careful with what you say --- That man is easily provoked. 注意/小心 说话,那个男的 一惹就 生气/火大。
常见的phrases/idioms:惹草拈花 惹火 惹火烧身 惹祸 惹乱子 惹恼 惹怒 惹气 惹事 惹是非 惹是生非 惹眼 惹怨
(2) exceptions:
in '惹人怜爱', here '惹' means ‘make/let’. Namely 'let people want to '怜爱' he/she/it'.
惹人注目
2. 引起 means 'give rise to;lead to;cause;make。'. The effect/consequences are uninfluenced by emotions or personal prejudices.
这起交通事故是因为司机的酒后驾驶 引起/导致/造成 的。