Not in ordinary usage, they are not proper nouns.
Of course, if they begin a sentence or are part of a title, they should be capitalized.
And some publishers still follow the convention of capitalizing pronouns that refer to the Deity.
One should always capitalize names in sentences.
When it precedes a person's name or when it is used as a direct address then it is capitalized. Examples: Sweetheart Anne I'm home, Sweetheart.
Only capitalize "Democrat" when it refers to a specific political party or organization. In a general sentence referring to someone who supports democratic ideals, "democrat" should not be capitalized.
Yes, "Ma'am" should be capitalized when using it to address someone directly in a sentence.
If you are addressing someone as the president then yes you do capitalize it.
You only need to capitalize the word "billion" if it is the first word of the sentence...or if it is actually someone's name, or any other proper noun.
There is no grammatical reason to capitalize every word in a sentence. It may sometimes be done as someone's attempt at emphasis, but it is never grammatically correct.
At the begaining of a sentence, and the first letter of someone's name.
One should always capitalize names in sentences.
You do not capitalize chickenpox in a sentence. The exception is if the word is the first in the sentence.
When it precedes a person's name or when it is used as a direct address then it is capitalized. Examples: Sweetheart Anne I'm home, Sweetheart.
No, you do not capitalize "first birthday" in a sentence.
You only capitalize 'deceased' if it is at the start of a sentence.
Only capitalize "Democrat" when it refers to a specific political party or organization. In a general sentence referring to someone who supports democratic ideals, "democrat" should not be capitalized.
Yes, you should capitalize the letter after a comma in a sentence.
Yes, you should capitalize the word after a comma in a sentence.
Yes, you always capitalize a day of the week.