PM represents two Latin words meaning "after mid-day" (post meridiam)
Am is after.
am= ante meridian pm= post meridian
PM or p.m. same fro AM or a.m
PM or p.m. same fro AM or a.m
either is fine
differ proper names from things named after proper names
The Book of Proper Names was created in 2002.
The ISBN of The Book of Proper Names is 2226133895.
Since we are talking about acronyms, the proper way to write it would be with capital letters.
The Book of Proper Names has 170 pages.
differ proper names from things named after proper names
Yes, names are proper nouns because names are explaining a specific type of person, a name.
Emily Rose is a proper noun because it is the name of a person. Common nouns would be girl, sister, friend, etc. Names are always proper nouns, names of people, names of streets, names of books, names of stores, names of countries, names of most anything or anyone are proper nouns.