Here are some "logical" tag examples:

Here is an EM tag example. This tag is used for emphasis and often resuts in italicized text (depending on how browser interprets the tag).

Here is a STRONG tag example. This tag is also used for emphasis and often resuts in bold-faced text (depending on how browser interprets the tag).

Here is a CODE tag example. This tag and often resuts in mono-spaced text (depending on how browser interprets the tag).

Here is a CITE tag example. This tag is used for citations and often resuts in italicized text (depending on how browser interprets the tag).