i'd like to find all tags (or terms) related to all posts from a category :
Post 1 is tagged as 'strong', 'enough' and is in category 1 and 2
Post 2 is tagged as 'enough', 'tough' and is in category 2
Post 3 is tagged as 'not', 'more' and is in category 3
Post 4 is tagged as 'what', 'else' and is in category 1
So if i want to find all terms related to posts in category 1, the query will return : 'strong', 'enough','what', 'else'
But i can't build the query even with the doc and my data in wordpress database.... :(
Can anyone suggest me something to start ?