There was once a difference in classification that a Dwarf was below 4' 10, but above 4'' a Midget being 3'- 4' at maturity. However, certainly in England the terms are seen as inter-changeable. Ironically I am good friends with a genetically short family.
Just an example. A sweet onion is about 7% sugar, in-which about 40% of that is Fructose. A white onion (or any non-sweet type) is about 5% sugar, in-which less than 40% is Fructose. The amount of Fructose you are getting from even a few ounces of onion is minute. This Fructose is also bound with the flesh (Fiber) and other forms of sugar (Sucrose and Glucose).
For instance, if you eat cherries for their therapeutic value, 10 sweet cherries or 1 cup of sour cherries contain about 4 grams of fructose. The fructose level of other fruits are listed in the graphic below. So if you had no other sources of fructose 25 cherries would put you at 10 grams of fructose. You would need to eat more than 60 cherries to put you over the limit. My guess is that if you only did this occasionally and did not have insulin resistance this would likely not be a problem.