Does anybody have a spreadsheet or link of abbreviations??

It may be helpful for you to join an active Guild and/or Alliance. I myself initially never knew some of these abbreviations until my fellow Alliance members helped me figure them out

A good guild and alliance will have members who would be able to sort out those kind of questions for you (as well as other questions such as: Where can I level up at X level? How can I make mesos? How do I get leech? Etc. Etc.)

To start you off:
WS = Wolf Spider
WR = WindRaider
CD = Compact-Disk (which is commonly just called "CDs")
All of these are popular monsters that players like to receive leech or train at for leveling. WS leech is given from levels 75 to 85. WR leech from levels 65 to 75, and CDs from 74 beyond? (not too sure about this particular lower and upper level limit tbh). CORRECTION: 68-75 as per post below (thanks Shivering!)

Let me know if you need any more help!

 

WS stands for wolf spiders. It’s a popular leech spot for 75-85.

WR stands for windraiders. It’s a popular leech spot from 65-75.

CDs references a mob in Taiwan called Greatest Oldies that look like CD disks. This is a popular training spot in early 3rd job as well as a popular leech spot from 68-75.

 

And its time to write most possible that I think are worth remembering off top the head

gs2 = ghost ship 2 (singapore)
WS = Wolf Spider (LVL 75+) NLC
WR = Wind Raider (LVL 65+) NLC
CD = Greatest Oldies (LVL 67+) Taipei tower
CWK = Crimsonwood Keep
HT = Horntail
Zak = Zakum
Himes = Dreamy Ghost (LVL 90+) Zipangu
Ulu 1 / 2 / 3 = Ulu Entrance maps (LVL 85+) Singapore
Petri = Petrifighter (LVL 105+) Singapore
Skeles = Skelegons (LVL 108+) Leafre

Market abbreviations
c/o = Current-Offer for a particular item (aka try to offer more than what is asked)
l/o = Looking-Offer for a particular item
a/w = Auto-Win for a particular item (insta buy with that price, normally high or what person wants to surely get)
bwg = brown work glove (7 slot glove most used for scrolling)
br = bath robe (lvl 20 10 slot overall)
CS/WS = Chaos / White scroll (most expensive scrolls in market)

 

https://forum.maplelegends.com/index.php?threads/sharpsides-guide-to-legends-abbreviations.8097/

Contains daily, classes, skills, places, party quests, items, monsters, bosses and common maplestory terms abbreviations