Peace to all.
Just like any other language Arabic language has multiple meaning of many words but like any other language, the situation or the context will tell you what meaning to use. Also while trying to understand Quran you must know and respect the legal authority of Muhammad peace be upon him. You can not translate the verses of Quran without looking at the context and without looking at the Sunnah and teaching of prophet peace be upon him. For example the word Sadaqa in Quran is mentioned to describe the obligatory zakat, the voluntary charity and also an act of forgiveness/kindness without any money involved. When companions of Muhammad SWS aked him the meaning of Zulm in one Ayah, he told them here it meant Shirk. When Muhammad SWS said " salloo..." all his companions understood he was talking of daily prayers, but when Allah SWT says Salloo Alaihee, they all understood He was ordering us to make Dua for Muhammad SWS, (Context Alihee shows us the meaning). Thanks. Please keep me in your prayers( and you all know this means your Duas, not your daily prayers).