Just found this: http://ngrams.googlelabs.com/
This seems to be a great way to waste a lot of time.
Look at curious spike of interest to tRNA and ribosomes around 1900... this surely means something important. Let us zoom in:
Trends for tRNA and ribosome coincide, so it can not be just a glitch, there should have been some serious research done on translation around the turn on the century... But why did they stop? May be they failed to discover some important components and thus research dwindled?
mRNA? Nah, seems like mRNA was very much a big thing then! How about RelA? Yes! This is it. Now we know - failure to advance translational research around 1900 was caused by failure to discover RelA. Case closed.