1 basic

2 fundamental

3 main

4 elementary

1 Japan

1 root

2 stem

3 origin

4 source

5 this

6 the current

7 original

8 inherent

9 originally

10 classifier for books, periodicals, files etc

1 the person himself

2 I (humble form used in speeches)

3 oneself

4 myself

5 in person

6 personal

1 original

2 originally

3 at first

4 it goes without saying

5 of course

1 small capital, huge profit (idiom); to put in a little and get a lot out

1 to talk shop all the time (idiom)

1 hardwork and thriftiness are the foundations of service (idiom)

1 ensure that you pay debts of gratitude (idiom)

1 hidebound by convention (idiom)