do you mean taking a word like PHOTO
as in photograph
or photophobic
or photosynthisis
or photo...(what is that work that is used to about plants? not photogenic, (but that's another photo word) but the name of a plant hormone that effects the parts of plants exposed to light?)

and relate them to science? (the tops of plants grow towards the sun, but the roots tend to be photophobic!) or other stuff
like telephoto lenes on cameras, or radiophoto space exploration?

i would suggest something like one lookto search for words. (enter *photo or Photo* and get hundred of words with photo as a root, or prefix or suffix!

my other obsession