H-bomb and Thermonuclear weapon

H-bomb noun - A nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form helium.

Thermonuclear weapon and H-bomb are semantically related in nuclear bomb topic. In some cases you can use "Thermonuclear weapon" instead a noun phrase "H-bomb", when it comes to topics like atomic weapon.

H-bomb and thermonuclear weapon are semantically related in nuclear bomb topic. You can use "H-bomb" instead a noun phrase "Thermonuclear weapon", if it concerns topics such as atomic weapon.