加油：

1，literally: refuel. If your car is getting out of fuel, you need to stop by a 加油站

2，"come on!". Here it means to make an extra effort. If you want to cheer someone up, say 加油！

吃醋：

1，literally means "to eat vinegar/ vinegar sauce". 你喜欢吃醋吗？

2，mostly used as an expression for describing someone as a "jealous person".

（btw, there are loads of 双关语 and 谐音 with 吃: 吃苦/ 吃香/ 吃豆腐。。。）

马上

1，"on a house"：你不可以骑马上公路。

2, "immediately": 我马上就打电话给他。

Feel free to contact me, if you need more such expressions:)

hi, yes, 谐音are not very popular in daily life, so lets see the example for 双关语， like 备胎，which is means Spare tire, it also means someone who have relationship , your are the second choise of her or she.

for example: 他有女朋友，你只是他的备胎而已。

hope it is useful

That's not difficult ~~~!!

双关语 ： homonym 谐音：synonym

For example : 双关语 “方便” 1.convenient “算账” 1.calculate the bill

2.go to the wash room 2.penalize you for your responsibility

“包袱” 1.bags

2.encumbrance

谐音 for pinyin "li" 力 : power 利 ：profit 立 ： stand

"ge" 哥 : brother 歌 ：song 鸽 : pigeon

You konw that there are not so many pronunciations in mandarin so there more synonyms than homonyms~~~~!!