1. A computer program product for constructing and utilizing an ontological graph, the computer program product comprising a non-transitory computer readable storage medium having program code embodied therewith, the program code readable and executable by a processor to perform a method comprising: receiving a seed term from a user; receiving a first expansion signal from the user; constructing an ontological graph that includes nodes representing the seed term plus other terms that are located in accordance with instructions derived from the first expansion signal, wherein the seed term and the other terms share a common trait; and displaying terms from the ontological graph as string literals in a dictionary, wherein the dictionary contains related other terms at a resolution level that is controlled by the first expansion signal from the user and the seed term, wherein the first expansion signal causes additional nodes to be identified for the ontological graph, wherein the dictionary is an original dictionary that contains the seed term, wherein the first expansion signal further causes terms represented by the additional nodes to populate an expanded dictionary, and wherein the expanded dictionary is expanded from the original dictionary in which the seed term was located.
1. A computer program product for constructing and utilizing an ontological graph, the computer program product comprising a non-transitory computer readable storage medium having program code embodied therewith, the program code readable and executable by a processor to perform a method comprising: receiving a seed term from a user; receiving a first expansion signal from the user; constructing an ontological graph that includes nodes representing the seed term plus other terms that are located in accordance with instructions derived from the first expansion signal, wherein the seed term and the other terms share a common trait; and displaying terms from the ontological graph as string literals in a dictionary, wherein the dictionary contains related other terms at a resolution level that is controlled by the first expansion signal from the user and the seed term, wherein the first expansion signal causes additional nodes to be identified for the ontological graph, wherein the dictionary is an original dictionary that contains the seed term, wherein the first expansion signal further causes terms represented by the additional nodes to populate an expanded dictionary, and wherein the expanded dictionary is expanded from the original dictionary in which the seed term was located. 11. The computer program product of claim 1 , wherein the method further comprises: determining the common trait based on a frequency of use within a predefined set of documents, wherein terms that are found within the predefined set of documents at a same frequency of use share the common trait.