ILAH is someone or something you obey and execute according to obey.
If you do not received my self ilah, i will fire you from my company.
Quran Reference: Surah Furqan 25:43, Al Qasas 28:38, Ash Shuara 26:29
Mushrik is someone who disobeyed order
If you disobey Allah's order, muslim will call you mushrik.