自然物

Question 1

山地

Answer 1

さんち

Question 2

区分

Answer 2

くぶん

Question 3

高地

Answer 3

こうち highlands; heights

（用例：156高地）

Question 4

高台

Answer 4

たかだい highlands; perch

Question 5

台地

Answer 5

だいち tablelands; plateau

Question 6

台

Answer 6

だい plateau; terrace

（関連する表現：前方50メートル、湖の後ろの台、あれを「しろがね台」。）

Question 7

丘陵

Answer 7

きゅうりょう hill

Question 8

丘

Answer 8

おか hill

Question 9

小高い

Answer 9

こたかい hilly

Question 10

平坦（な）

Answer 10

へいたん flat

Question 11

なだらかな

Answer 11

gradual (terrain/hills)

Question 12

峠

Answer 12

とうげ (mountain) pass

Question 13

稜線

Answer 13

りょうせん mountain ridge; ridge line; spur line

Question 14

鞍部

Answer 14

あんぶ (mountain) saddle

Question 15

山頂

Answer 15

さんちょう (mountain) summit

Question 16

崖

Answer 16

がけ cliff

Question 17

谷

Answer 17

たに valley

Question 18

谷地

Answer 18

やち marshland; swamp

Question 19

峡谷・渓谷

Answer 19

きょうこく・けいこく gorge; ravine; canyon; (second option also) valley with river running through it

Question 20

狭隘（な）

Answer 20

きょうあい（な）narrow; small; confined (e.g. ravine)

Question 21

盛土

Answer 21

もりど embankment (for road, railway, etc.); raising the ground level; fill

Question 22

切土

Answer 22

きりど (engineering: soil or rock material) cut

Question 23

標高

Answer 23

ひょうこう altitude (above sea level); elevation

Question 24

平地

Answer 24

へいち plains; flatland

Question 25

平野

Answer 25

へいや plain

Question 26

平坦地

Answer 26

へいたんち flat ground; leveled

Question 27

扇状地

Answer 27

せんじょうち alluvial fan or delta
(a fan-shaped deposit formed where a fast flowing stream flattens, slows, and spreads typically at the exit of a canyon onto a flatter plain)

Question 28

三角州

Answer 28

さんかくす (river) delta

Question 29

盆地

Answer 29

ぼんち basin (between mountains)

Question 30

流域

Answer 30

りゅういき drainage or catchment basin; river basin; watershed

Question 31

窪地・凹地

Answer 31

くぼち hollow; low ground; basin; pit; depression

Question 32

滝壷

Answer 32

たきつぼ plunge basin; waterfall lake; basin under a waterfall

Question 33

湿地

Answer 33

しっち marsh; damp ground; wetland; bog

Question 34

湖沼

Answer 34

こしょう lakes and swamps; inland waters

Question 35

沼地

Answer 35

ぬまち swampland; marshland; wetland

Question 36

泥地・泥土・泥濘

Answer 36

でいち ・でいど mud; bog・ぬかるみ quagmire; slush; mire; sludge

Question 37

畑

Answer 37

はたけ field (for agriculture)

Question 38

水田

Answer 38

すいでん (rice) paddy field

Question 39

湿田

Answer 39

しつでん wet paddy field

Question 40

乾田

Answer 40

かんでん dry paddy field

Question 41

果樹園

Answer 41

かじゅえん orchard