According to Mayo Clinic, Down syndrome causes a distinct facial appearance, intellectual disability, developmental delays, and may be associated with thyroid or heart disease in a person. So calling people with this syndrome 'Mongoloid' is extremely vulgar and disrespectful to ethnic Mongolians. Likewise, how will the population react if Down Syndrome was associated with 'European' looks? If you use this term, you are automatically a xenophobic, in my opinion.
If any difference is noteworthy, it would probably be that an age is usually between two times, e.g. 1290-1450AD, whereas an era is less set - but that isn't a rule, its just a matter of usage. Synonyms would be epoch, or eon. Source(s):
While the Bible is one collection of books with one unique message, there are numerous differences between the Old Testament and New Testament. There is a difference in time period.The Old Testament books were written from the time of Moses until about 400 BC.hile the Bible is one collection of books with one unique message, there are numerous differences between the Old Testament and New Testament. There is a difference in time period.