Englishfor English speakers
a
Determinative
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A is used when the following word could be any of a certain type.
Compare "A book I saw on the shelf" and "The book I gave you yesterday".
a
Noun
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A is the first letter of the alphabet.
The letter "a" comes before "b".
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In some schools, an A is a very high grade.
Ron got an A on his earth science test.
different
Adjective
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If two or more things are different, they are not like each other, not the same. The two things have two sizes, not both the same size; or they have two shapes, they don't both have one shape; or they each have a color, not just one color for both things; or they are not the like each other in some other way.
The day and night are quite different.
My brother's bike is different from mine.
loyalty
Noun
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Loyalty is the quality or state of a person or group of persons being loyal to someone or something.
The Germans exhibited great loyalty to Hitler during his rule in Germany.