Similarities in Koren and Japanese languages

Korean and Japanese are absolutely different languages but there are a lot of similarities between them. First of all, it is about the grammar, that helps Koreans and Japanese people learn languages of each other very quickly. Some of my Japanese colleagues in Korea told me that they needed only a couple of years to learn Korean. 

Secondly, about 70% of the lexicon of Korean and Japanese consists of loan-words from Chinese. This words sound very similar but have nothing to do with the origin of the two languages. But etymological similarity could be seen in the Korean and Japanese languages among the words, which was not borrowed from China. 

Here are some examples, collected by the author.

갓 (kat)                  - かさ (kasa)                    "umbrella"

갈매기 (kalmaegi)   - かもめ (kamome)           "gull"

것 ( keot)                - こと  (koto)                   ”thing"

거미 (geomi)           - ぐも (gumo)                  "spider"

깍다 (kkak-ta)        - かく (kaku)                    "to pick off" 

맛 (mas)                  - うまさ (umasa)        "taste" 

섬 (seom)                - しま (sima)                "island"

물 (mul)                   -  みず (mizu)                "water"

눈물 (nunmul)          - なみだ (namida)             "tears" ("eye water")

말 (mal)                   - うま (uma)                    "horse"

마을 (maeul)            - むら (mura)                   "village"

뫼 (moe) dialect       - やま (yama)                   "mountain"

곰 (kom)                  - くま (kuma)                   "bear"

남비 (nambi)            - なべ (nabe)                    "pot"

여러 (yeoreo)          - いろ (iro)                    "various"  (여러나라 - いろんな国)

이발 ( ippal)            - は (ha)                            "tooth"