Colors - https://youtu.be/jibvu9BHV_k?t=2646 The last ~20 minutes are on how important giving something a word can be to our perception of that thing.
Words - https://youtu.be/2_iXBnfLs9Y?t=2386 This whole episode is great, but the last ~20 minutes are particularly relevant to the importance of words to thought itself.