Thiokol is a lesser-known word that refers to a type of synthetic rubber commonly used in fuel seals, adhesives, and waterproof coatings. However, there are several other terms that can be used as synonyms for "thiokol." One alternative is "polysulfide," which is another type of rubber-like material known for its resistance to chemicals and high strength properties. Additionally, "thioprene" can be used as a synonym for thiokol, as it is a similar compound with similar applications. These synonyms not only help to diversify our vocabulary but also assist in understanding the various materials used in industries such as aerospace or construction.