Board Thread:Boruto Discussions/@comment-1452242-20170117195252/@comment-3279282-20170118204930

Explaining canon is fairly simple, just take the Pokemon franchise: Three different publication methods, three different canonicities.
 * Game canon
 * Anime canon
 * Manga canon

In Naruto, it's different, because there is only one publication method (the manga) and everything is based on it:
 * Manga canon
 * Anime adaption of the manga
 * Manga adaption of the two manga-canon movies (so basically reverse-anime adaption)
 * Anime canon (filler)
 * Novel canon
 * Anime adaption of the novels
 * Movie canon (filler-ish)
 * Game canon
 * Game-only anime (filler-ish)

One could also divide it all into three tiers: Canon, semi-canon and filler. Manga and manga-movies are canon, anime, novels and novel-anime are semi-canon and anime-filler, movies, games and game-anime is filler.