a rose, arose

A rose or a rose ( two words ) means one ( a ) flower, the popular flower for gardens or bouquets ( rose ) --
She cut a rose from the garden and put it in a bud vase.
He wore a rose in his lapel, and she carried a bouquet.

Arose or arose ( one word ) is the past tense ( yesterday, or some time ago ) of "arise", an old-fashioned term meaning to get up or wake up --
The big cat arose, and walked slowly away.
He arose at dawn, while everyone else was still asleep.

Arose or arose may also be the past tense ( yesterday, or some time ago ) of "arise", meaning to turn up or appear, as a difficulty or complication --
The project was nearly done when a new problem arose.
We needed a lawyer when complications arose.

Now that you know that, you can say--
"He gave her a rose, hoping she'd forget the doubts that arose while he was away."

a rose, arose

A rose or a rose ( two words ) means one ( a ) flower that grows on a shrub, usually with thorns, often used for cut flowers or perfume ( rose )--
She carried a bouquet of roses, and he had a rose in his lapel.
We planted a rose bush in the front garden.

Arose or arose ( one word ) is the past tense ( yesterday, or some time ago ) of "arise", meaning to spring up; to ascend or to appear--
The balloon arose slowly, and the people below seemed to shrink.
"When out on the lawn there arose such a clatter, I sprang from my bed to see what was the matter."

Now that you know that, you can say--
"A question arose at the meeting, concerning the use of a rose for our company logo."

rise, rice, arise

Rise or rise ( pronounced rize ) means to get up or move up--
We rise at 6 every morning.
If it rains too much, the creek will rise.
If the yeast is old, the bread won't rise.
I don't like to see a rise in the price of groceries.
To get "a rise" out of someone is to make him or her display anger or annoyance--
That comment really got a rise out of him.
You're just trying to get a rise out of me.

Arise is an old-fashioned word for rise--
Arise and follow!
"I say unto thee, arise!"

Rice or rice ( rhymes with nice  ) is a commonly eaten grain--
Rice cakes are popular with dieters.
I like fried rice when we order Chinese food.

Now that you know that, you can say--
"I hope the price of rice doesn't rise."

Note--the past tense ( yesterday, or some time ago ) form of "rise" is "rose"--
He rose at 6 am.
They were up before the sun rose.
 The past tense of "arise" is "arose".
My love arose.
Not to be confused with "rose" the well-known flower.
My love is a rose.
Note #2--the third person singular ( he, she, it ) form of "rose" would be "he rose"--
 At 6 o'clock, he rose.
not to be confused with "heroes", as in sandwiches or doers of mighty deeds--
My heroes have always been cowboys.
Note # 3--"risen" is a past participle of "rose"--always used with a "helper" verb ( action word )--
He is risen.
He has risen.
Note # 4--yet more possible confusion--"rows", as in rows of chairs ( rhymes with "rose" )--
We arranged the chairs in neat rows.