Hookworm and Nematode worm

Hookworm noun - Parasitic bloodsucking roundworms having hooked mouth parts to fasten to the intestinal wall of human and other hosts.

Nematode worm and hookworm are semantically related. In some cases you can use "Nematode worm" instead a noun "Hookworm".

Nematode worm noun - Unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic.

Hookworm and nematode worm are semantically related. Sometimes you can replace term "Hookworm" with "Nematode worm", this terms are similar.