1 Reverse dictionary. Enter meanings to find the corresponding suffixes (e.g., searching with the word arm will locate the suffixes -humeral and -brachial).  Finding meanings. Enter a in the box and click the Search button.
Re: calorie vs. a food calorie. A food calorie is 1,000 chemistry calories. That did sound a little like a homework question.
Another major difference is that a chemist has a vast knowledge of usually only chemistry and lab procedures while a chemical engineer has a general knowledge of chemistry and a vast knowledge of thermodynamics and the underlying mathematics.