Were and where
were is the past tense for the verb “to be”
Example: I am your best friend (“am” or “are” is the present tense of the verb “to be”)
You “were” my best friend – (this is the past tense of the verb “to be“)
where refers to place
Example 1: Michael, where are you going? (this refers to the place Michael is going to)
Example 2: Peter – Where did you throw the ball? (this refers to the place the ball went.
Different and various
Different refers to instances where a particular person or thing differs from another person in a particular way
Example: a cow is different from a horse because a cow does not have horns.
Various is a much broader term, usually referring to a number of examples or items. English speakers and writers tend to use different far too often, where in most cases various would be better.
Example: There are various types of shark species that attack humans . Here the writer or speaker is referring to a variety of shark species, He is not referring to differences between specific shark species such as fin shapes etc.
That is all for today. Stay safe!