천

Sky

천국 = heaven
천사 = angel
천지 = heaven and earth, the world
천재 = genius, natural talent
천체 = heavenly body
천명 = destiny
천계 = revelation
천장 = ceiling
마천루 = skyscraper

Stream

인천 = incheon (name of korean city)

개천 = creek, ditch
청계천 = cheonggyecheon (name of stream in seoul)
하천 = river

급

Give, pay

지급 = Payment, supply
봉급 = Salary
월급 = Monthly salary

공급자 = provider
공급(하다) =

supply
지급(하다) = supply, pay

Class, grade

고급 = Advanced level
중급 = Intermediate level
초급 = Elementary level
등급 = A grade, rank

학급 = class (school)
최고급 = highest grade/class
특급 = special class

Urgent, fast

급하다 = To be urgent
긴급(하다) = emergency
급행(열차) = express train
응급실 = Emergency room
급등(하다) = Rise suddenly (cost, price)
급증하다 = surge, sudden rapid increase
구급차 = ambulance

I thought “bam” was night?

Yeah, 밤 (bam) = night. 야 (夜) is hanja (Chinese characters which are used in Korean) meaning night and is used in some Korean words as you can see. There are lots of cases where Korean uses both a native-Korean word and a word taken from Chinese (sino-Korean) so don’t be surprised to see different words for things for which there is only one word in English! i.e.
해 = Sun

(native-Korean)

태양 (太陽) = Sun (sino-Korean)
날 = Day (native-Korean)

일 (日) = Day (sino-Korean)

Learn about hanja: How to Study Korean, Korean Wiki Project

야

Night

야심(하다) = late at night
야식 = midnight snack
심야영화 = late-night movie
열대야 = tropical night
야간 = night time

야간근무 = night shift
야근 = night work, overtime
야경 = night view

Field, wilderness

야비(하다) = to be coarse,mean
분야 = area, sphere, field

야만 = barbarism, savagery

음

Sound, tone

발음 = pronunciation
자음 = consonant
모음 = vowel
음악 = music
녹음 = (voice) recording
녹음기 = (sound) recorder
음절 = syllable
음표 = musical note

Swallow, drink

음식 = food
음료수 = beverage

지

Paper

시험지 = exam paper
답안지 = an answer paper
백지 = blank sheet of paper
지폐 = paper money
표지 = cover, binding
편지 = letter
편지지 = letter paper
포장지 = packing/wrapping paper
한지 = traditional korean paper
A4용지 = A4 paper

Earth, soil, ground, region

여행지= travel destination
지구 = earth
지역 = area, region
관광지 = tourist attraction (spot/site)

료

Material,

비료 = fertilizer, manure
음료 = beverage
자료 = data
재료 = material, ingredient
조미료 = seasoning

Estimate

과태료 = fine, penalty
구독료 = subscription rates
무료 = no charge, free
보험료 = insurance bill

수수료 = commission, fee, service charge

Medical treatment

치료(하다) = cure, Treat
의료보험 = medical insurance
진료= medical examination and treatment
진료하다 = treat
진료받다 = receive treatment
진료시간 = consultation hours
진료실 = consultation room
진료비 = fee for medical treatment

Finish

만료 = expiration, Termination

만료일 = the expiration date
계약 만료 = the termination of an agreement

완료(하다/되다) = complete
종료(하다) = close, End
수료(하다) = pass through courses of study

결

Tie, result

단결(하다) = unity
연결(하다) = link, connection (연 = connect)
결합(하다) = union
결혼(하다) = marriage
결과 = result
결국 = eventually, conclusion (국 = position, circumstances)
결론 = conclusion (론 = discuss)

Absence, defect

출결 = attendance and absence
결석(하다) = absence (school)
결근(하다) = absence (work)
결시(하다) = absence (exam, test)
결함 = defect, fault (product)
결점 = weak point, defect, fault (person)
결핍 = shortage, deficiency
결례 = lack of courtesy, negligence in etiquette
결격 = disqualification
결번 = not valid(in service) number

Decide

결정(하다) = decision
결심(하다) = resolution
결코 = absolutely not, never

Clean, pure

순결(하다) = purity
결백(하다) = innocence, purity
결벽증 = excessive love of cleanliness

서

West

서 = west
서양 = the west
서해 = the west(ern) sea

Book, papers, writing

서점 = bookstore
독서(하다) = reading, read books
도서 = books
교과서 = textbook, schoolbook
서류 = documents, papers
보고서 = (written) report
신청서 = written application, application form
이력서 = resume
추천서 = letter of recommendation
증명서 = certificate, testimonial
엽서 = postcard
낙서(하다) = scribble, scrawl, doodle, graffiti