different, separate, another

question, problem on homework etc. / a question; a matter (of time etc.) / a problem (something that needs to be dealt with); a trouble / an issue; a matter

not particularly; not specially (used with a negative verb)

difference / another / exception

separated by

different, separate, another

difference

separated, divided, uncombined, disunited, individual, respective

separate; different; another

(informal) no problem