Answer :
Romanesque style buildings have semi-circular arches. Gothic style buildings have long, narrow columns. Gothic style came from/evolved from Romanesque style.
Romanesque church; massive and fortress like, thick walls, few windows, heavy stone roofs, huge columns, round Roman arches.
Gothic cathedral; had flying buttresses to support the walls, had tall spires, lofty towers, and pointed arches. Open, spacious interior, stained glass windows.
Hope this helps. :)
