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guard • ian n., one that guards. Our puppy is a loyal guardian to our baby sister, barking loudly when anyone new goes near her.

dis • tin • guish v., discern; detect with the eyes or with other senses. Because the brothers looked so much alike, from a distance it was difficult to distinguish one from the other.

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va • por n., scattered matter suspended in the air and clouding it (such as smoke or fog). Even without hearing the teapot whistle, I knew it was ready by the vapor pouring out of the spout.

trans • for • ma • tion n., change in composition, structure, or outward form and appearance. After the addition of the new paint, furniture, carpet, and curtains, the transformation of the room was complete.