Hydrogen bomb and Neutron bomb

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

Neutron bomb and hydrogen bomb are semantically related In some cases you can use "Neutron bomb" instead a noun phrase "Hydrogen bomb".

Neutron bomb noun - Atom bomb that produces lethal neutrons with less blast.

Hydrogen bomb and neutron bomb are semantically related in nuclear weapon topic. You can use "Hydrogen bomb" instead a noun phrase "Neutron bomb", if it concerns topics such as nuclear bomb, atomic bomb, atomic weapon.