Hello,
Important Spanish terms to know and used a lot are:
1. gracias (thanks)
2. ser (to be)
3. a (to)
4. ir (to go)
5. estar (to be)
6. bueno (good)
7. de (of, from)
8. su (your, her, his, their)
9. hacer (to do, to make)
10. (friend)
11. por favor (please)
12. no (no)
13. en (on, in)
14. haber ("to have" as an auxiliary verb)
15. tener (to have, to possess)
16. un, uno, una (a, one)
17. ahora (now)
18. y (and)
19. que, qué (that, what)
20. por (for, by)
21. amar (to love)
22. quién (who)
23. para (for, to)
24. venir (to come)
25. porque (because)
26. el, la, los, las (the)
27. antes (before)
28. más (more)
29. bien ("well" as an adverb)
30. aquí, allí (here, there)
31. querer (to want, to love)
32. hola (hello)
33. tú (you)
34. poder (to be able)
35. gustar (to be pleasing)
36. poner (to put)
37. casi (almost)
38. saber (to know)
39. como (like, as)
40. donde (where)
41. dar (to give)
42.pero (but)
43. se (itself, herself, himself, themselves)
44. mucho (much)
45. nuevo (new)
46. cuando (when)
47. chico, chica (boy, girl)
48. entender (to understand)
49. si (if)
50. (or)
51. feliz (happy)
52. todo (all, every)
53. mismo (same)
54. muy (very)
55. nunca (never)
56. yo, me (I, me)
57. sí (yes)
58. grande, gran (big, great)
59.deber (to owe, should)
60. usted (you)
61. bajo (low, under)
62. otro (other)
63. salir (to leave)
64. hora (hour; see also lesson on telling time)
65. desde (from)
66. ver (to see)
67. malo, mal (bad)
68. pensar (to think)
69. hasta (until)
70. tanto, tan (used in making comparisons)
71. entre (between, among)
72. durante (during)
73. llevar (to wear, to carry)
74. siempre (always)
75. empezar (to begin)
76. él, ella, ellos, ellas (he, she, they)
77. leer (to read)
78. (thing)
79. sacar (to take out, to remove)
80. conocer (to know)
81. primero (first)
82. andar (to walk)
83. sobre (over, about)
84. echar (to throw)
85. sin (without)
86. decir (to say)
87. trabajar (to work)
88. nosotros (we, us)
89. también (also)
90. adiós (goodbye)
91. comer (to eat)
92. triste (sad)
93. país (country)
94. (to listen, to listen to)
95. hombre (man)
96. mujer (woman)
97. le (indirect-object pronoun)
98. creer (to believe, to think)
99. encontrar (to find)
100. beber (to drink)101. hablar (to speak)
102. ese, esa (demonstrative "that"; also see the demonstrative pronouns)
103. baño (bathroom)
104. después (afterwards, later)
105. gente (people)
106. ciudad (city)
106. sentir (to feel)
107. llegar (to arrive)
108.pequeño (small)
109. escribir (to write)
110. año (year)
111. menos (minus, except)
112. lo (various uses)
113. cual (that, which)
114. este, esta (this)
115. dejar (to leave)
116. parte (part)
117. nada (nothing)
118. (each)
119. seguir (to continue, to follow)
120. (to divide)
121. ya (still, already)
122. parecer (to seem)