| experiment with(verb, expression, phrasal verb, taste, test) |
| experimental(adjective, trial, probationary) |
| exponent(noun, occasion, occurrence, example, exemplar) |
| forerunner |
| gauge(noun, measure, standard) |
| give a try(expression, idiom, fit, test, evaluate) |
| have knowledge of(verb, expression, idiom, get, notice) |
| icon(noun, image, picture, symbol) |
| image(adjective, model, picture, symbol) |
| installment(piece, unit, slice) |
| item(noun, drop, part, end, taste) |
| mouthful(noun, taste, piece, scrap, crumb) |
| natural |
| notice(verb, get, recognize, discern) |
| occasion(noun, situation, occurrence, circumstance, example) |
| parcel(noun, drop, part, end, taste) |
| particular(noun, occasion, occurrence, example) |
| pilot(adjective, experimental, probationary) |
| play around with(expression, idiom, examine, try, test) |
| principle |