Notice very short book here, for example (6)
I believe the answer is:
adverb
'here for example' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe there's a link between them I don't understand?
'notice very short book' is the wordplay.
'notice' becomes 'ad' (short for advert).
'short' means to remove the last letter.
'book' becomes 'b' (abbreviation for book).
'very' with its last letter removed is 'ver'.
'ad'+'ver'+'b'='ADVERB'
Can you help me to learn more?
(Other definitions for adverb that I've seen before include "Verb qualifier" , "Word that qualifies another" , "Term of modification" , "Modifying word (gram.)" , "Author of The Thirty-Nine Steps" .)