At the age of 62, one can retire with social security benefits within the US, and is considered to be the age of a senior citizen by many organizations. However, the federal government has determined one who is 65 years of age or older is senior citizen. Organizations such as AARP and most businesses consider age 55 as senior citizen and you would receive the standard senior discounts. So there are various opinions, but age 55 is about the youngest considered age.
The word Shoah in Hebrew means catastrophe, abyss, disaster or destruction and is used in many contexts such as Shoah ecologit - ecological disaster or Shoah Svivatit - environmental disaster. HaShoah with the definite article refers to The Disaster or The Holocaust..
The Hebrew predominantly uses three words, but one we will not consider because it refers to the peace offering. The second is charash. It means to hold one's peace, quiet, silent, rest, and a host of nuances both positive and negative depending on the context. The third is the very familiar greeting, shalom.