Well, I've had this question for sometime now but I keep forgetting to ask it. Well was reading a little bit of one the Mavel Comics' series "The Avengers" and they have group of bad guys named A.I.M (Advanced Idea Mechanics). They mostly deal with advanced robots and other sorts of mechinery. Anyway, my question is not about acronym but the name they gave themselves "Advanced Idea Mechanics." My concern is if it's okay to have two plural nouns next to each other like "Advanced Ideas Mechanics"?