Changing the name "Product" in the productbook compont can sometimes be wishfull.
Lets say you have a site about Adopting Animals and you don't want your Productbook say "Products" but "Adaption Animals" since this is so much nicer 
How to do this:
Just replace the "product" tekst in the language file english.php
You wil find this file in the componentcom_productbooklanguage
The extensions JoomlaExplorer lets you do this online.
Most item names come from this, so for instance you can replace
var $PRODUBK_0038 = 'Products Book';
With
var $PRODUBK_0038 = 'Adoption Animals';
First you could change the frontend items as of line 173 // Frontend down to get the feel of it.
You can of course put in any productname you want….
Like:
- Car catalog
- Fisch book
- Flower book
- Booting overview
Just fit it to reflect your need
