I'm quite unsure regarding the usage of single quotation marks (') and double quotation marks (") in English.
I had thought that double quotation marks were usually used to quote sentences from passages/given sources, nouns/things ("Westminster Bridge", "alliteration", or "voice" regarding its usage in poetry), as well as some less common/important uses including being snarky and using them to indicate a sarcastic remark.
Someone had told me today that you were supposed to refer to things with two inverted commas (") instead of one.
Which one is correct? Could someone explain the usages between the two different types of quotation marks?