These words mean whatever you understand them to mean. There is only one singularity. The infinitely small, infinitely dense point at the center of every black hole, (and at the centre of every sub atomic particle), is the source and substance of Infinity. Size is a relative phenomenon. To measure is to compare. The only non-arbitrary ruler that we can measure anything by is the smallest conceivable thing (a single wave of electromagnetism), and the largest perceivable thing (the visible universe). Geometric logic is the key to unlock the mystery of reality ~ Remember, these words mean whatever you understand them to mean!