what guide words are on the dictionary page on which gimmick appers
The word that would be in between "crochet" and "crossbones" on a dictionary page would be "crocus." In alphabetical order, the words would appear as "crochet," "crocus," and "crossbones."
No, the word "compare" would not be listed on the dictionary page between the guide words "compartment" and "compete." The guide words help you locate words alphabetically, so "compare" would appear on a different page.
Hemis phere
This word does not appear in the Oxford English Dictionary, but it does appear in Urban Dictionary: http://www.urbandictionary.com/define.php?term=merton
The guide words for the page with any given word will be different from dictionary, depending on the size of the pages, the number of words in the dictionary, and the size of the type. In my dictionary, The Random House Dictionary, paperback edition, the guide words on the page with the word irrigation are irretrievable-isothermal.
The guide words at the top of the page in the dictionary for the word "addition" would be "address" and "adherent."
Guide words are the words printed at the top of each page in a dictionary that indicate the first and last words on that page. They help users quickly locate a word without having to scan the entire page.
A word that would not appear on the page with the guide words "viola" and "virulent" is "vortex." This is because "vortex" falls alphabetically between "viola" and "virulent," and would thus be found on a different page in a dictionary. The guide words indicate that only words starting with "vi" would be listed on that particular page.
The word "simpling" does not appear to exist in the dictionary. The closest words that do exist in the dictionary are "simply" and "simplifying."
'Scanium' is a nonsense word. It does not appear in the online dictionary OR the etymology dictionary.
Depends what dictionary you use
Any page number.