Custom Taxonomy

Product choose custom taxonomy like category and you can display custom taxonomy in Search Form and Product Detail.

1) Create Custom Taxonomy

Go to Products >> Custom Taxonomy >> Add Taxonomy

Show In Listing: If choosing this, this taxonomy will display in listing of product (Archive Template)

Add Value (term) for a taxonomy

Go to Products >> Custom Taxonomy, a listing of Taxonomies will be showed. If you want add value for a taxonomy, you click the folder icon of that Taxonomy

2) Add Custom Taxonomy in Product

Step 1: Setup Custom Taxonomy in Global Setting

WooComemrce >> Settings >> Booking & Rental >> General >> Show Taxonomy depend Category: Yes/No

Step 2: Setup Custom Taxonomy in Category

Read here

Step 3: Add taxonomy in product

Product >> Add New Product

3: Display Custom Taxonomy at frontend

1: Display in search form element