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If not please explain the difference in terms of usage

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Twisted Pair refers to the cable itself. Two conductors inside the cable are wound round each other to cancel out electromagnetic interference. A Twisted Pair cable could carry all kinds of signals.

A Crossover Cable refers to how the cable terminators are connected at the end of the cable. In this case the connectors are connected asymmetrically so you can do things like connect the input of one device to the output of another. A common case is an Ethernet Crossover Cable which allows you to connect two ethernet ports on two systems directly together without using a hub or switch; this works because some pin assignments are swapped from one end of the cable to the other.

Ethernet cables are usually UTP so a crossover cable will be a twisted pair cable, but so would an ordinary ethernet cable. The two things are not related directly.

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so this means that straight through cables cannot be used to connect two devices? – user39966 Oct 28 '10 at 12:03
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Sometimes they can be, it depends on the ethernet port. Some ports will automatically configure themselves to work appropriately as part of the auto-negotiation process. homepage.ntlworld.com/robin.d.h.walker/cmtips/… – Dave Webb Oct 28 '10 at 12:06
This autonegotiation is referred to as Auto-MDIX. – Dennis Williamson Oct 29 '10 at 3:24
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up vote 2 down vote

Twisted pair is the type of cable, crossover is a type of way twisted pair can be wired up at the jacks.

Crossover cables are made of twisted pair cable, so are straight-through cables.

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