AMBIGUOUS (Adj)
If you describe something as ambiguous, you mean that it is unclear or confusing because it can be understood in more than one way.
두 가지 뜻으로 해석할 수 있는
Real e.g. from papers (http://newpaper.asia1.com.sg/printfriendly/0,4139,71333,00.html)
Craig said he likes playing 'morally ambiguous' characters, because their dilemmas are 'fascinating'.

Vague(adj)
1 (말·뜻·감정·생각 따위가) 막연한, 애매한, 명확치 않은[on, about]; 희미한, 어렴풋한. ▷AMBIGUOUS

trace back a vague memory
아련한 기억을 더듬다

Hmmm, where the VIP of this post ?
INDISTINCTindistinct memories
확실하지 않은 기억들
The postmark was indistinct.
소인(도장을 찍은 자국)은 확실하지 않다.

nebulous (adjective) = indistinct

Finally I've come here!!!! to play a word game...and thank you for letting me study more words.

My word is "obscure" (of course I find it from the on-line dic.
I found what he had said very obscure.
I found what he had said were very obscure.
* These two sentences are correct.

EQUIVOCAL
equivocal (Adj)
unclear and seeming to have two opposing meanings, or confusing and able to be understood in two different ways:
His words to the press were deliberately equivocal - he didn't deny the reports but neither did he confirm them.
NOTE: The opposite is unequivocal.
Source : http://www.cambridge.org

Next New Word.
ANOMALY (noun)
something that is unusual or that does not seem right
e.g. There are some anomalies in the data.

abnoraml?

ToBeSwan, yes, there is a sense of 'abnormality' but I would not use 'abnormal' to describe data, charts or patterns.

This time, it is very difficult to find ...
How about "variable"?
Maybe it's not proper...
EX) The report has a lot of variables.

MSHyun, when you type in English, does your software have a function called 'Thesaurus' ?

Irregularity is closer in meaning to ANOMALY.

Although my word processing software has the Thesaurus function, the list for 'anomaly' did not include ABERRATION.

incongruity
is similar to anomaly, isn't it?

Yes, Nepali.

Next New Word.
ASSORTMENT
Real e.g. L'Occitane takes care of hands and body with its Honey Harvest collection, a really rich assortment of shower and bath products and lotion for afterward.
Source : http://www.sacbee.com/content/lifestyle/story/11551768p-12450560c.html

I think i know the word's meaning. But it's not easy to find out a similar word. It is different from collection or group, isn't it?

HODGEPODGE
세계인들이 생각하는 가장 아름다운 영어 단어는 ‘마더’(motherㆍ어머니)인 것으로 조사됐다.
영국문화원은 25일 전세계 비영어권국가 102개국의 4만여명을 대상으로 설문조사한 결과 마더가 가장 많이 꼽혔으며 이어 패션(passionㆍ열정), 스마일(smileㆍ미소), 러브(loveㆍ사랑), 이터니티(eternityㆍ영원)가 아름다운 영단어 ‘톱5’로 선정됐다고 밝혔다.
히컵(hiccupㆍ딸꾹질), 호지포지(hodgepodgeㆍ뒤범벅) 등 뜻밖의 단어들이 상위권에 진출했다.

Nepali, who did the ranking for the top 5 most frequently used words ?

ToBeSwan, depending on the context, there are several alternatives such as 'variety', 'mixture', 'combination', 'multitude', 'range', 'mixed bag', 'host'.
e.g. There's a whole host of reasons why he didn't get the job.

Next New Word.
ANTI~
Let's vary this game a little. Many words start with 'anti~', try to cover the commonly used ones. I'll start with 'ANTITHESIS'

antibiotics

영국문화원= [The British Council, 英國文化院]이 조사했다나봐요

ANTI-ageing

ANTI-establishment

ANTI-clockwise

Anti-bacterial
Anti-inflammatory
Anti-viral
Anti-virus
Anti-retroviral

Anti-social

NEW word.
ANCHOR