In graph theory there are two concepts of sameness whereby graphs are judged to be the same, namely equality and isomorphism. […] An indication of the pervasive role isomorphism has in graph theory is the fact that isomorphism has virtually captured the word is.

I always crotched the boom while reefing, and made an easy job of it, the boat, in the meantime, taking perfect care of herself on any point of sailing, under jib and jigger.

When this conversation was repeated in detail within the hearing of the young woman in question, and undoubtedly for his benefit, Mr. Trevor threw shame to the winds and scandalized the Misses Brewster then and there by proclaiming his father to have been a country storekeeper.

Sometimes the Hadean, Archean and Proterozoic are lumped together in a supereon called the Precambrian.