The main difference between Veranda and Balcony is that the Veranda is a roofed, open-air gallery or porch and Balcony is a platform projecting from the wall of a building
A veranda or verandah (from Portuguese varanda, IPA: [vɐˈɾɐ̃dɐ]) is a roofed, open-air gallery or porch. A veranda is often partly enclosed by a railing and frequently extends across the front and sides of the structure.
Although the form “verandah” is correct and very common, some authorities prefer the version without an h (the Concise Oxford English Dictionary gives the h version as a variant and The Guardian Style Guide says “veranda not verandah”).
A balcony (from Italian: balcone, scaffold; cf. Old High German balcho, beam, balk; probably cognate with Persian term بالكانه bālkāneh or its older variant پالكانه pālkāneh;) is a platform projecting from the wall of a building, supported by columns or console brackets, and enclosed with a balustrade, usually above the ground floor.
A gallery, platform, or balcony, usually roofed and often partly enclosed, extending along the outside of a building. from 18th c.
An structure building, especially outside a window.