Hard hat, jodhpurs, saddle, stables, gymkhana, curry comb, crop, mucking out.
It could be apron, wok, saucepan, chopping board, knife, bain-marie, spatula - and the semantic field would be cookery. I'm sure you could think of your own examples.
In the 19th century a German called Konrad Duden invented a wonderful sort of cross between a dictionary and a thesaurus. He compiled regular dictionaries too: there are twelve volumes of his work. But what is now known as a "duden" is a kind of pictorial dictionary which takes one semantic field at a time and labels all the elements. I have the "Oxford Duden of Pictorial Italian" and jolly useful it is too.
In the last six or seven months we have been bombarded with social distancing, lockdown, hand sanitiser, PPE, shielding, second wave, moonshot, world-beating, test and trace, Covid-19, coronavirus, hotspot, quarantine, herd immunity, super spreader, self-isolation ... no guesses as to the semantic field there.
And then there's pandemic. I have been asked to write about "global pandemic" so next week's post will be about tautology. Is "global pandemic" tautologous or not?