IN A SENTENCE:

I was catching my BREATH as I hurried up the stairs so I had to BREATHE in by inhaling through my nostrils and BREATHE out by exhaling through my mouth.

DISCLAIMER: I am not an English Native Speaker nor an expert in English language. What I write here are all from experience and research. If you feel I am out of line or say the wrong things, please alert me in the comments. To this effect, I am not immuned to these confusing words myself and this series is as much as an education for me as to those who read these blog posts.

PHOTO SOURCE: LINKEDIN

BREATHE VS. BREATH

BREATHE

...is a VERB showing the process of breathing by inhaling and exhaling.

SOURCE: WIKIHOW

Example #1: To BREATHE properly, one has to inhale through the nose and exhale through the mouth.
Example #2: (Ms. Saigon)

Oh Tam! He's here! He is here, he's so near We might BREATHE the same air tonight! Your father's here

Read more: Miss Saigon - Please Lyrics | MetroLyrics

BREATH

...is a NOUN that refers to the element that is carried through BREATHE(ing). It may refer to the air that we BREATHE.

SOURCE: UNIVERSITY OF OXFORD

Example #1: “Every breath you take, every move you make… I’ll be watching you.” (The Police)
Example #2: Smoking can cause cancer and bad BREATH.

FURTHER STUDY:
https://www.espressoenglish.net/difference-between-breath-and-breathe/
http://www.gingersoftware.com/english-online/spelling-book/confusing-words/breath-breathe
http://rachelsenglish.com/breath-vs-breathe/
https://www.grammarly.com/blog/breath/
http://grammarist.com/spelling/breath-breathe/

I hope we learned something new today. I surely did! See you in the next confusing words! If you like this series, please follow @cjclaro and upvote and resteem ;-)