lesson 26 nouns, and inter-lesson links

docs/howtostudykorean/unit-1/04-adjectives.md

@@ -1354,7 +1354,7 @@ It is often more common to use the passive form (끝나다) to indicate that you
 
 - <TTS>일이 끝났어요</TTS> = <span class="md spoiler">The work is finished (which implies that you finished the work)</span>
 
-The grammar for this is talked about in [Lesson 14](https://www.howtostudykorean.com/unit1/unit-1-lessons-9-16/lesson-14-korean-passive-verbs/).
+The grammar for this is talked about in [Lesson 14](./14-passive.md).
 
 Examples:
 
@@ -1534,7 +1534,7 @@ The pronunciation of this word is closer to “끈나다”
 
 Notes:
 
-This is the first passive verb you have come across. For more information on passive verbs, visit [Lesson 14](https://www.howtostudykorean.com/unit1/unit-1-lessons-9-16/lesson-14-korean-passive-verbs/).
+This is the first passive verb you have come across. For more information on passive verbs, visit [Lesson 14](./14-passive.md).
 
 Examples:
 
@@ -2020,11 +2020,11 @@ When an adjective ends in “~있다” like this, instead of attaching ~ㄴ/은
 - 나는 맛있는 음식을 먹다 = <span class="md spoiler">I eat delicious food</span>
   - (나는 맛있는 음식을 먹어 / 저는 맛있는 음식을 먹어요 <AudioButton src="https://www.howtostudykorean.com/wp-content/uploads/2014/01/sLesson-4-6.mp3" />)
 
-The difference here is due to what I call the “~는 것” principle. For now, you do not need to think about why ~는 is added instead of ~ㄴ/은. It is sufficient at this point to just memorize it as an exception. The concept behind this grammatical rule is introduced in [Lesson 26](https://www.howtostudykorean.com/unit-2-lower-intermediate-korean-grammar/unit-2-lessons-26-33/lesson-26/) and I continue to discuss it into [other Lessons in Unit 2](https://www.howtostudykorean.com/unit-2-lower-intermediate-korean-grammar/unit-2-lessons-26-33/). This concept is related to _verb_ _s_ being able to describe nouns. For example:
+The difference here is due to what I call the “~는 것” principle. For now, you do not need to think about why ~는 is added instead of ~ㄴ/은. It is sufficient at this point to just memorize it as an exception. The concept behind this grammatical rule is introduced in [Lesson 26](../unit-2/26-describing-nouns-with-verbs.md) and I continue to discuss it into [other Lessons in Unit 2](https://www.howtostudykorean.com/unit-2-lower-intermediate-korean-grammar/unit-2-lessons-26-33/). This concept is related to _verb_ _s_ being able to describe nouns. For example:
 
 “The man who I met yesterday will go to the park that I want to go to”
 
-However, this is very complex and is the whole basis to the ~는 것 principle that I mentioned earlier. As I said, you will begin to learn about this in [Lesson 26](https://www.howtostudykorean.com/unit-2-lower-intermediate-korean-grammar/unit-2-lessons-26-33/lesson-26/).
+However, this is very complex and is the whole basis to the ~는 것 principle that I mentioned earlier. As I said, you will begin to learn about this in [Lesson 26](../unit-2/26-describing-nouns-with-verbs.md).
 
 ## To be a lot of: 많다