what is the difference between ed and ing
before a noun, how can i know if i need to put ed or ing in general

ex: interested thing or interesting thing
in this example, it is ok. i would like to know how choose in general

thank youI reformulate my question: how can i form compound adjectives?
when can i use something with ed and when with something with ed?

Question

what is the difference between ed and ing
before a noun, how can i know if i need to put ed or ing in general

ex: interested thing or interesting thing
in this example, it is ok. i would like to know how choose in general

thank youI reformulate my question: how can i form compound adjectives? 
when can i use something with ed and when with something with ed?

Answer

"Interesting" can describe any noun, but "interested" only refers to how a person feels. So a book can be "interesting", but it cannot be "interested" because it does not have feelings. So, "I'm interested in this book, because it is interesting."

As another example, I could be "excited" to go on a trip. *I* am excited, because *the trip* is exciting.

Does that make sense?

Answer

Ed is added to form an adjective with a passive meaning.
Ing is added to form an adjective with an active meaning.
Eg: The film is so boring, it makes me bored.
With an example above, you can see "boring" is to show the status of one person/thing, and "bored" is the way this person feels of the film

Answer

If you describe something with an -ed adjective, it has received a feeling or action.

If you describe something with an -ing adjective, it has caused the feeling.

Answer

the verb plus ing = the gerund or the verbal noun
the verb with ed = past tense or past participle, and could be used as adjective
when you say interesting things, it means these things are interesting in general 
while (I am interested in learning languages = I like learning languages)

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