Material
Part of speech: noun
Definition: Matter which may be shaped or manipulated, particularly in making something. A sample or specimens for study. Cloth to be made into a garment. Things written to be performed. A person who is qualified for a certain position or activity.
Part of speech: adjective
Definition: Having to do with matter. Worldly, as opposed to spiritual. Significant.
Example sentence: Well, we're living in a material world, and I'm a material girl... or boy.
Crucial
Part of speech: adjective
Definition: Being essential or decisive for determining the outcome or future of something; extremely important.Cruciform or cruciate; cross-shaped.Term of approval, particularly when applied to reggae music.
Example sentence: Individual science fiction stories may seem as trivial as ever to the blinder critics and philosophers of today - but the core of science fiction, its essence has become crucial to our salvation if we are to be saved at all.