Disturb
Part of speech: verb
Definition: to confuse or irritate a quiet, constant state or a calm, continuous flow, in particular: thoughts, actions or liquids. to divert, redirect, or alter by disturbing. to have a negative emotional impact; to cause emotional irritation or confusion.
Example sentence: You think, eventually, that nothing can disturb you and that your nerves are impregnable. Yet, looking down at that familiar face, I realized that death is something to which we never become calloused.
Trouble
Part of speech: noun
Definition: A distressful or dangerous situation.A difficulty contributing to such a situationEfforts taken.A malfunction, as in "heart trouble".A violent occurrence.
Part of speech: verb
Definition: To bother; to annoy.
Example sentence: The trouble with most of us is that we would rather be ruined by praise than saved by criticism.