Cases of word usage

1) a collection of poems or pieces of prose by one or more authors, often on a single subject or theme (anthology)

2) a group of countries under a single supreme authority (empire)

3) the act, process, of causing power, feeling etc to exist; a single stage in family descent (generation)

4) a single article or unit in a list etc (item)

5) a short written reminder; a short letter; a piece of paper money (banknote); a single sound of a certain pitch and duration; to notice (something); pay attention to (note)

6) of 1; a single (person, thing etc); the same (one)

7) (the distance covered by) a single step when walking or running (pace)

8) a single amount (dose) of liquid medicine, poison etc (potion)

9) (a division of the animal kingdom consisting of) animals of the simplest type, formed of a single cell (protozoa)

10) a single cell by which a flowerless plant (e.g. moss, a fern) reproduces itself (spore)