Wow. Enjoying tennis is about understanding tennis, even if you are only a spectator. And that vocabulary is considerable. Definitely more than 4 terms. Below is a link with tennis terms broken down by category.
The noun 'tennis' is an uncountable noun; an aggregate noun, a word representing an indefinite number of elements that make up the game.
The word 'tennis' is a noun. When a noun is used to describe another noun, it's called an attributive noun (or noun adjunct).The term 'tennis court' is a compound noun.Why some nouns are also adjective and some are not, even though they are used as an adjective, is a mystery. The word 'tennis' is designated as a noun only in the five dictionaries that I consulted for this answer.
The word 'table tennis' is a common noun, a word for any game of table tennis anywhere.A proper noun is the name of a person, place, thing, or a title; for example:Jiaqi Zheng of Northwestern Polytechnic University, the 2012 College National Table Tennis Women's Singles ChampionRobbins Table Tennis Specialties, Inc., Clinton Township, Michigan"Table Tennis: Steps To Success" by Richard McAfee
The word 'be' is not a noun. The word 'be' is a verb, the verb to be.
Kindness is not either. It is a noun and "kind" is an adjective.
Yes, the noun 'kind' is an abstract noun as a word for a word for a group united by common traits.
The word 'word' is a singular, common noun; a word for a thing.The noun 'word' is a concrete noun when spoken, it can be heard and when written, it can be seen.The noun 'word' is an abstract noun as in a kind word or a word to the wise.
No. It's a noun (He is a leading tennis coach.) or verb (He will coach at the new tennis club.)
The word 'kind' is both an adjective and a noun. The noun kind, a singular, common, abstract noun is a word for a group of individuals or instances sharing common traits; a category.The noun forms for the adjective kind are kindness and kindliness.
The compound noun 'Table Tennis' is a common noun, a general word for a type of game or sport.A proper noun is the name of a person, place, thing, or a title; for example:Jike Zhang, ITTF No. 1 Ranked Men's Table Tennis ChampionNational Collegiate Table Tennis Association (NCTTA)Robbins Table Tennis Specialties, Inc., Clinton Township, MI
The noun 'kind' is an abstact noun as a word for a type or class. The abstract noun form of the adjective "kind" is "kindness".
Yes, tennis is a common noun.