Ask Russian experts to help translate musical terms and vocabulary.

Minor chord минорноетрезвучие.

Add the triad увеличеноетрезвучие.

Subtraction triplet уменьшёноетрезвучи.

Seventh chord

The seventh chord большоймаорныйсептакк.

The seventh chord большойминорныйсепта in major and minor.

The seventh chord in minor is малыймаорныйсетакоо.

The minor seventh chord малыйминорныйсетаккк.

Lower the seventh chord малыйуменьшенныйсет.

Subtract the seventh chord уменшеныйсептакор?.

Add the seventh chord большойувеличенныйе.

The four-part choir sang четырiхголосие.

Four-voice harmony четырiхголоснаягармоо.

I feel dizzy. I almost confused the third, fourth and seventh chords at first, but I didn't know the difference until I checked.

Landlord, to be honest, 20 points for your question is really a bit short. . .

Now start to add:

The fifth and sixth chords.

The third and fourth chords are терцквартакорд.

Second chord

The sixth chord is секстакорд.

Hughes chord

Give you a few more.

Eleven chords ундецимакорд.

The eleventh is ундецима.

Second sound секунда

The third tone is терци.

The fourth key is кварта.

The fifth degree is квинта.

The sixth sound is секста.

The quaint квартоль

quartet

Five tones квинтоль

(instrumental) quintet

The root is the same. If you have a certain Russian foundation, you should be able to see it. But it doesn't matter without a Russian foundation. You can master it in half a year with a little effort. I wish you success in your studies.