This puzzle is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles.
If a word conforms to a special rule, I call it a tulip word. Here is a list of examples:
| TULIP | NOT TULIP |
|---|---|
| tulip | rose |
| poppy | iris |
| chrysanthemum | orchid |
| baker | florist |
| priest | photographer |
| reception | service |
| expenses | debts |
| marriage | divorce |
And CSV version:
TULIP, NOT TULIP
tulip, rose
poppy, iris
chrysanthemum, orchid
baker, florist
priest, photographer
reception, service
expenses, debts
marriage, divorce
QUESTION: What is the rule to tell whether a word is a tulip word or not? Why is it called a tulip word?