What is primal in an ontology are the concepts in a domain.
Terms are secondary, but of course very important to have.
They refer to the concepts. Instead, an NLL is intended to capture the key relationships between the words insofar as how they occur in sentences, as well as how their meaning is similar to other words. This suggests that there might be an good way for an NLL and an ontology to work together, each supplying a complimentary part of an overal solution to some problem.