Types of Samas

Looking at "rajputra" (prince), Ravi thinks it is like "neelkamal" — one word describing the other, meaning "a royal son". His sister says the relationship here is different. Who is right?

Looking at "chauraha" (crossroads), Simran thinks "chau" (four) here is just a quality-word describing "raha" (path), like "neelkamal". Her brother says the whole word is actually about a GROUP or collection. Who is right?

Looking at "pratidin" (every day), Anuj thinks it is a tatpurush compound like "rajputra" because two words are joined here too. His teacher says the word itself functions like an ADVERB, not a noun. Who is right?

After learning "rajputra" (tatpurush), Kaveri thinks every two-word compound must be tatpurush. So she classifies "neelkamal" as tatpurush too. Her friend says "neelkamal" is a different kind of compound, even though it looks similar on the surface. Who is right?