Englishfor English speakers
a
Determinative
—
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
—
A is the first letter of the alphabet.
The letter "a" comes before "b".
—
In some schools, an A is a very high grade.
Ron got an A on his earth science test.
real
Adjective
—
A thing that is true is real.
Strange as the story sounded, the story was real.
—
Something that is not artificial is real.
The nice shoes were of real leather.
live
Verb
—
To be alive; to have life.
He's not expected to live for more than a few months.
—
To have permanent residence somewhere.
I live at 256 Oak Avenue.
—
To survive, to continue.
Her memory lives in that song.
live
Adjective
—
Having life; something alive.
The post office will not ship live animals.
—
A live firearm or explosive is able to cause harm.
The air force practices dropping live bombs on the uninhabited island.
—
A live bet is a bet that can be raised by the person betting.
Tommy's blind was live, so he was given the option to raise.
live
Adverb
—
A live event is an event that happens in real time; direct.
The concert was broadcast live by radio.
one
Determinative
—
(ordinal first) The number 1.
We have one nose and one mouth.
one
Noun
—
The number 1.
One is the smallest whole number.
one
Pronoun
—
One is a singular pronoun which means "someone" or "people". It is used more often in formal writing.
It is easy to see the difference if one looks closely enough.