Not all PDFs are created equal. The "better" aspect of the Oxford WordPower PDF comes down to specific pedagogical features designed for Arabic speakers.
By providing an English definition first, the dictionary forces your brain to work in English. It strengthens your vocabulary network. Here is why this makes you a better learner: Not all PDFs are created equal
The Arabic translations provided are not robotic. They carefully distinguish between formal Modern Standard Arabic (MSA) and the context in which the English word is used. Not all PDFs are created equal
Even with the best tool, learners fail. Avoid these errors to truly get better: Not all PDFs are created equal