Certain dictionary definitions of 'and' in lower-case letters are as a conjunction. In capital letters 'AND' is a noun as a Boolean operator. Below is an example of a request to a sign creator for a sign of symbols for Fish & Chips.
Please give me symbols for: fish, 'fish' and and, '&' and chips, 'chips'.
In that example the word 'and' can be said to appear four times in a row. That first use of 'and' in the example sentence was as a conjunction why was it not a conjunction for the other three uses of the word 'and'? Other users commented about 'and' as something other than a conjunction. What is 'and' other than a conjunction?