Bait and switch and Double talk

Bait and switch noun - A deceptive way of selling that involves advertising a product at a very low price in order to attract customers who are then persuaded to switch to a more expensive product.

Double talk and bait and switch are semantically related. In some cases you can replace phrase "Double talk" with "Bait and switch", this phrases are similar.

Double talk noun - Deliberately unintelligible gibberish.

Bait and switch and double talk are semantically related. Sometimes you can use "Bait and switch" instead a verb phrase "Double talk".