What is the adjective form of the word 'people'?

An adverb does not modify? What is the adjective of 'Laud'? We felt very tired. The word tired used in the sentence is--- Mr. Rohan is very friendly. Here 'friendly' is- The journey was pleasant. Here 'pleasant' is- Depression is often hereditary. The underlined word is a/an – 'sea' শব্দটির adjective হচ্ছে --- The old man died penniless. Here the underlined word is a/an- I have _ interest in the matter . He is friendly with his friends. Underlined word is-