is basil and tulsi same - #24002

I am really confused about something and hope someone can help me! I've been hearing a lot about basil and tulsi lately, especially in my Ayurvedic training class. I thought they were the same thing, but then my friend mentioned that they’re different? I mean, both of them have such a nice aroma, but I always assumed when people said basil, they meant tulsi too. Just last week, I tried making a herbal tea with what I thought was tulsi, and it didn’t taste like what I remembered! A little while ago, I had this cold, and imagine my surprise when I couldn't find any 'tulsi' in the store — they just had basil. Are basil and tulsi the same? Like, can I use them interchangeably in recipes or herbal remedies? I’m really curious because I love cooking with these herbs, but I just wanna make sure I’m getting the right benefits. Also, what do you think is the best way to use tulsi or basil for overall well-being? Any tips would be super helpful since I'm kinda lost here!