Q:

Magento 2, how to change the the word `IN STOCK` in product description?

Using Magento 2.2, Front-end, Product-Calalog. I want to rename the word IN STOCK to other word.

A:

Method 1:
If you want to change this text only for product details page and for that section which you mentioned then you need to copy the following file to your theme:

vendor/magento/module-catalog/view/frontend/templates/product/view/type/default.phtml

You theme file location will be like below:

app/design/frontend/[Vendor]/[Theme]/Magento_Catalog/templates/product/view/type/default.phtml

And update the text.
Method 2:
Create one one en_US.csv on your theme like below:

app/design/frontend/[Vendor]/[Theme]/i18n/en_US.csv

And add the translation text like "In stock","Salable"

A:

You can translate "IN STOCK" to "Your Text" by below translation file
Add "IN STOCK","Your Text" to below file
app/design/frontend/Vendor/theme/i18n/en_US.csv

Run below commands to check text changes
php bin/magento setup:upgrade
php bin/magento setup:static-content:deploy
php bin/magento cache:clean

A:

Override
<magento_root>/vendor/magento/theme-frontend-luma/i18n/en_US.csv in
/app/design/frontend folder and open the en_US.csv file.
Find the text you want to translate and change the translation.
If the text which you want to translate does not exist in the file, then write in the following format:

.
"text to translate","translated text"

For example, in your case write:
"In stock","Salable"

Refresh the Magento's cache and check the frontend.

