One template, lot of collection dinamically chosen

hello, I want to use a single template to place several collections , which will change in relation to the url I’m calling but I always get an error . for example , I have my page www.draconomicom.com (currently done in laravel ) and there I see a picture and names of objects, pinterest style , I want when I go to a url example www.draconomicom.com/armas , will see the same page , but with weapons Collection . clue where to start ?, probe with session variables , but there is no case , I’m using right now boilerplate differencial

If the items you are showing are so similar that you can use the same template for them, why not just have one collection and instead filter on the url parameters?

It is similar in image and name, but it is not the same in details post. i need to change the collection.