However, you could use them in a creative way to create a humorous or ironic effect:
* "The pop star, once a teenage idol, now sat idle in a recording studio, wondering if his career had peaked."
This sentence uses "idol" to refer to the pop star's former status and "idle" to describe his current state of inactivity.
You could also use them in a sentence that plays on the similar sounds:
* "The singer, a self-proclaimed 'idol,' spent her time idly browsing social media, hoping for a viral hit."
While grammatically correct, this sentence is more of a playful use of the words rather than a natural and meaningful one.
Ultimately, it's important to choose the right words to convey the intended meaning and avoid confusing or awkward phrasing.