Differences and similiarities between the two forms used by Britten?

Please clarify your question. Which two forms are you referring to?

Benjamin Britten composed music in many different forms, including:

* Operas: (e.g., Peter Grimes, Billy Budd, The Turn of the Screw)

* Vocal works: (e.g., War Requiem, Serenade for Tenor, Horn, and Strings, Les Illuminations)

* Instrumental works: (e.g., The Young Person's Guide to the Orchestra, String Quartets, Piano Sonata)

* Choral works: (e.g., Hymn to St. Cecilia, Rejoice in the Lamb)

To help me understand your question, please specify the two forms you want to compare. For example:

* "What are the differences and similarities between Britten's operas and his vocal works?"

* "How do Britten's string quartets differ from his orchestral works?"

Once you provide more context, I can give you a detailed answer.