Всё ясно.
Everything is clear.
1. я́сно Adverb of я́сный
Often used word (top 600)
clearly, evidently, clear
Вырази себя как можно более ясно.
Express yourself as clearly as you can.
2. вы́разить verb, perfective
Somewhat often used word (top 3,000)
express
Я пишу, чтобы вы́разить своё недово́льство.
I am writing to express my dissatisfaction.
3. писа́ть verb, imperfective
Daily used word (top 300)
write, paint
Я пишу письмо́.
I'm writing a letter.
4. письмо́ noun, neuter, inanimate
Often used word (top 400)
letter (written communication), writing (action), script
Войдя в ко́мнату, она начала чита́ть письмо́.
On entering her room, she began to read the letter.
5. войти́ verb, perfective
Often used word (top 400)
enter