Cases of word usage

1) to introduce (a new official, professor, passenger ship etc) at a special ceremony; to be the beginning of (something) (inaugurate)

2) to introduce ideas etc using continual effort (instil)

3) the one, single, example; and no other; and nothing else or more; but it must me added that; (used to introduce a condition or reason) (only)

4) of, concerning, the person, thing etc mentioned, known or understood; of, concerning, the person or thing farther in space; as much as the extent etc mentioned or understood; (used to introduce clauses of result) and the result was (that)

5) (used to introduce an indirect question, to suggest doubt or to express choice) (whether)