shelly and shalu are best friends(what is here countable noun and what is uncountable?)

I'm noticing that you're posting continuously different sentences and asking what's the countable and uncountable noun in this sentence? But according to me, you should get known that it's not necessary that every sentence has a noun, countable or uncountable. In your given sentence, there are total three nouns. Shelly, Shalu - Proper Noun Friends - Countable Noun