Come up: significado de surgir y diferencia con come up with

Come up se usa cuando surge una tarea o un imprevisto y cuando aparece un tema en una conversación: The question came up at the meeting. Something has come up permite explicar de forma breve que un asunto inesperado ha cambiado tus planes.

something (has) come up; come up at/in + meeting/conversation; come up with + idea

• Sorry, something has come up at work, so I'll be about an hour late.
• Your name came up at the meeting today; the boss wants you on the new project.
• The question of salary didn't come up until my second interview.

Come up with significa idear o proponer algo, como una solución. Las dos estructuras pueden aparecer juntas: The question came up at the meeting, and Lena came up with a solution.