What are some similarities between organic and inorganic compounds?

I know, this is something you might be wondering, like what?! But, it is possible. Take carbon dioxide or $C {O}_{2}$ for example. It is widely considered to be inorganic but some people would say it is organic. Now, look at other organic compounds. They all have carbon and hydrogen in them. Some include ethanol $\left({C}_{2} {H}_{5} O H\right)$ in your wine and glucose $\left({C}_{6} {H}_{12} {O}_{6}\right)$ in your favorite candy bar.