Synonyms

Problem – Difficulty, trouble, issue, hurdle, obstacle.
Travel – Journey, tour, trip, iteration.
Food – Edible, eatable.
Suitable – Appropriate, fit, pertinent, relevant.
Profession – Occupation, vocation, job, career.
Important – Vital, crucial, imperative, significant.
Harmful – Injurious, detrimental, noxious, deleterious.
Vegetation – Plants, flora.
Ban – Prohibit, forbid, disallow, debar.
Danger – Peril, menace, jeopardy, hazard.