Yes, presidency is a common noun; a word for the office of a president, any president of anything. A common noun is only capitalized when it is the first word in a sentence.
President's is a singular possessive noun.
Common
Common noun
common
Pea is a common noun, and peas is the plural...still a common noun.
A common noun.
Most definitely a common noun.
Camel is a common noun.
Th word tail is a common noun because the first letter of a proper noun is capitalized.
it is re@lly @ common noun
common
"Park Avenue" is a proper noun, because it is a place. Proper nouns like this should always be capitalized.