Plasma Arc Machining (PAM) Plasma arc machining is a nontraditional thermal process. Plasma is defined as a gas that has been heated to a sufficiently high temperature to become partially ionized and therefore electrically conductive. The term plasma, as employed in physics, means ionized particles.
Recurring vs. Reoccurring. Reoccur and recur are verbs that share a common root word. While they are very close in meaning, they are not the same. Something that is recurring happens over and over again, possibly at regular intervals. In contrast, something that is reoccurring is simply happening again but not always repeatedly.
There is no real difference, except that relevance is the right word. Relevancy's extra syllable is an unnecessary addition that brings no new meaning to the word. However, acâ¦cording to Merriam-Webster, relevancy came into use in the 1500s and relevance came into use in the 1700s. 6 people found this useful.